The top rated winter jacket, bringing warmth, breathability and a high level of rain protection along with a soft, comfortable fit. his jacket leads the way in demonstrating how a winter jacket should perform. Rain or Shine engineering makes this our best jacket ever for dry conditions while also providing significant rain protection GORE-TEX INFINIUM™ WINDSTOPPER® 150 fabric for wind protection with high breathability and effective rain protection Reduced seaming with seam sealing on shoulders reduces chances for water to enter through stitching Double-layer Alpha construction separates insulating layer from wind/water barrier to let you better regulate ventilation Water-resistant YKK® Vislon® zipper slides easily for better regulation of airflow Raw-edge waist with silicone gripper lies flat and seals out wind Double-layer cuff integrates with glove to prevent cold wind or water from entering at wrist Stretch fabrics with advanced patterning make for excellent close-to-body fit that still accommodates a wide range of body types Back ventilation 3 rear pockets with reflective laser-cut drain holes Zippered secure side pocket for valuables. Cyclingnews.com says this jacket is sets an all-new benchmark in what a winter cycling jacket can achieve and it's exactly what we think the perfect winter jacket should be. We started with a list of things we didn't like about the current jackets and set out to solve them—and in the process made our best jacket ever. The first issue to resolve related to moisture management. Even the best of the currently available fabrics provide a good level of breathability but can't keep up with the sweat generated during high-intensity riding. So we invented a double-layer construction that allows you to open an outer wind-protection layer while keeping the insulation layer closed and thereby allowing airflow inside the jacket to evacuate moisture while avoiding direct contact with the skin. On a long climb we'll completely open the outer layer to allow moisture to escape, and when we start the descent we close the outer layer and are completely dry inside. It works so well that sometimes it feels like magic. New for this year is a softer, warmer 3D insulation-layer fabric that provides better warmth, moisture management and fit. Next we focused on the openings: neck, waist and, most of all, wrists. The neck comes up high and is shaped to move with you, whether you're standing or in an aero position being a January hero and attacking your mates. For the waist we've created a stretch layer with a silicone bead that lies flat and completely seals out wind without bunching or riding up. New for this year is a brand-new double-layer wrist opening with an inner layer to go under your glove that seals tight to your wrist, and an outer layer that goes over your glove so that any rain will roll down the outside of the glove and not end up inside. Of course, the ultimate jacket will also hold up well in wet conditions, so we used GORE-TEX INFINIUM™ WINDSTOPPER® fabric along with waterproof seam taping on critical seams around the shoulder. Other seams are hidden out of direct water flow, and the water-repellent treatment on the fabric is sufficient to prevent most moisture from entering. We call it essentially waterproof, using our own subjective judgment to find a balance between water protection, breathability and comfort. It doesn't mean that no drop will ever come in, but we do longish rides in real rain and stay completely dry. All these features make it a favorite of our staff and most of our ambassadors, and the most versatile performance jacket for cold-weather training we've ever created.
The top rated winter jacket, bringing warmth, breathability and a high level of rain protection along with a soft, comfortable fit. his jacket leads the way in demonstrating how a winter jacket should perform. Rain or Shine engineering makes this our best jacket ever for dry conditions while also providing significant rain protection GORE-TEX INFINIUM™ WINDSTOPPER® 150 fabric for wind protection with high breathability and effective rain protection Reduced seaming with seam sealing on shoulders reduces chances for water to enter through stitching Double-layer Alpha construction separates insulating layer from wind/water barrier to let you better regulate ventilation Water-resistant YKK® Vislon® zipper slides easily for better regulation of airflow Raw-edge waist with silicone gripper lies flat and seals out wind Double-layer cuff integrates with glove to prevent cold wind or water from entering at wrist Stretch fabrics with advanced patterning make for excellent close-to-body fit that still accommodates a wide range of body types Back ventilation 3 rear pockets with reflective laser-cut drain holes Zippered secure side pocket for valuables. Cyclingnews.com says this jacket is sets an all-new benchmark in what a winter cycling jacket can achieve and it's exactly what we think the perfect winter jacket should be. We started with a list of things we didn't like about the current jackets and set out to solve them—and in the process made our best jacket ever. The first issue to resolve related to moisture management. Even the best of the currently available fabrics provide a good level of breathability but can't keep up with the sweat generated during high-intensity riding. So we invented a double-layer construction that allows you to open an outer wind-protection layer while keeping the insulation layer closed and thereby allowing airflow inside the jacket to evacuate moisture while avoiding direct contact with the skin. On a long climb we'll completely open the outer layer to allow moisture to escape, and when we start the descent we close the outer layer and are completely dry inside. It works so well that sometimes it feels like magic. New for this year is a softer, warmer 3D insulation-layer fabric that provides better warmth, moisture management and fit. Next we focused on the openings: neck, waist and, most of all, wrists. The neck comes up high and is shaped to move with you, whether you're standing or in an aero position being a January hero and attacking your mates. For the waist we've created a stretch layer with a silicone bead that lies flat and completely seals out wind without bunching or riding up. New for this year is a brand-new double-layer wrist opening with an inner layer to go under your glove that seals tight to your wrist, and an outer layer that goes over your glove so that any rain will roll down the outside of the glove and not end up inside. Of course, the ultimate jacket will also hold up well in wet conditions, so we used GORE-TEX INFINIUM™ WINDSTOPPER® fabric along with waterproof seam taping on critical seams around the shoulder. Other seams are hidden out of direct water flow, and the water-repellent treatment on the fabric is sufficient to prevent most moisture from entering. We call it essentially waterproof, using our own subjective judgment to find a balance between water protection, breathability and comfort. It doesn't mean that no drop will ever come in, but we do longish rides in real rain and stay completely dry. All these features make it a favorite of our staff and most of our ambassadors, and the most versatile performance jacket for cold-weather training we've ever created.
The Alpha ROS 2 is Castelli's ultimate jacket, bringing warmth, breathability and excellent level of rain protection teamed with a comfort, soft fit and feel. The Alpha ROS 2 sets the standard by which all others are measured.Gore Infinium Windstopper 150 fabric provides excellent protection from the elementsSeam sealing and double stitching on shoulders keep you mostly dryAlpha construction separates water/wind protection from insulation layerBetter ventilation and moisture evaporation thanks to separate insulation layerStretch fabrics and raw-edge waist and wrist cuffs improve comfort and fitThere was a time when your cycling wardrobe consisted of items for all occasions, as your wet weather gear was to clammy and flappy in the dry and your dry weather kit just didn't hack it in the rain. Castelli's Gabba and Perfetto ranges bridged the gap, but the Alpha ROS 2 takes all-weather performance to the next level. The Alpha ROS 2 features a clever two-layer construction to separate the insulation layer from the protective outer shell, giving better ventilation and moisture evaporation. Further boosting ventilation is the double front opening and the excellent breathability of the Gore Infinium Windstopper 150 fabric.Not only does the Infinium Windstopper 150 fabric offer excellent breathability and protection from the elements, it is also extremely soft to the touch and stretchy, allowing for a superb fit to provide excellent comfort. Raw-edge waist and wrist cuffs also improve fit and comfort. The excellent weather protection of the Windstopper fabric is improved even further by the addition of a DWR treatment as well as selective seam sealing, with addition seam sealing and double stitching on the shoulders. Along with a waterproof YKK Vislon Zipper, the jacket is essentially waterproof while not compromising it's excellent dry weather performance. An occasional drop may seep through the seams, but you'll still be warm and dry with the jacket letting any internal moisture evaporate with ease. The Alpha also features 3 rear pockets with reflective laser-cut drain holes to boost practicality and visibility. For riders looking for versatile jacket for all riding conditions, the Castelli Alpha ROS 2 is one of the best around.
The Alpha ROS 2 is Castelli's ultimate jacket, bringing warmth, breathability and excellent level of rain protection teamed with a comfort, soft fit and feel. The Alpha ROS 2 sets the standard by which all others are measured.Gore Infinium Windstopper 150 fabric provides excellent protection from the elementsSeam sealing and double stitching on shoulders keep you mostly dryAlpha construction separates water/wind protection from insulation layerBetter ventilation and moisture evaporation thanks to separate insulation layerStretch fabrics and raw-edge waist and wrist cuffs improve comfort and fitThere was a time when your cycling wardrobe consisted of items for all occasions, as your wet weather gear was to clammy and flappy in the dry and your dry weather kit just didn't hack it in the rain. Castelli's Gabba and Perfetto ranges bridged the gap, but the Alpha ROS 2 takes all-weather performance to the next level. The Alpha ROS 2 features a clever two-layer construction to separate the insulation layer from the protective outer shell, giving better ventilation and moisture evaporation. Further boosting ventilation is the double front opening and the excellent breathability of the Gore Infinium Windstopper 150 fabric.Not only does the Infinium Windstopper 150 fabric offer excellent breathability and protection from the elements, it is also extremely soft to the touch and stretchy, allowing for a superb fit to provide excellent comfort. Raw-edge waist and wrist cuffs also improve fit and comfort. The excellent weather protection of the Windstopper fabric is improved even further by the addition of a DWR treatment as well as selective seam sealing, with addition seam sealing and double stitching on the shoulders. Along with a waterproof YKK Vislon Zipper, the jacket is essentially waterproof while not compromising it's excellent dry weather performance. An occasional drop may seep through the seams, but you'll still be warm and dry with the jacket letting any internal moisture evaporate with ease. The Alpha also features 3 rear pockets with reflective laser-cut drain holes to boost practicality and visibility. For riders looking for versatile jacket for all riding conditions, the Castelli Alpha ROS 2 is one of the best around.
The Alpha ROS 2 is Castelli's ultimate jacket, bringing warmth, breathability and excellent level of rain protection teamed with a comfort, soft fit and feel. The Alpha ROS 2 sets the standard by which all others are measured.Gore Infinium Windstopper 150 fabric provides excellent protection from the elementsSeam sealing and double stitching on shoulders keep you mostly dryAlpha construction separates water/wind protection from insulation layerBetter ventilation and moisture evaporation thanks to separate insulation layerStretch fabrics and raw-edge waist and wrist cuffs improve comfort and fitThere was a time when your cycling wardrobe consisted of items for all occasions, as your wet weather gear was to clammy and flappy in the dry and your dry weather kit just didn't hack it in the rain. Castelli's Gabba and Perfetto ranges bridged the gap, but the Alpha ROS 2 takes all-weather performance to the next level. The Alpha ROS 2 features a clever two-layer construction to separate the insulation layer from the protective outer shell, giving better ventilation and moisture evaporation. Further boosting ventilation is the double front opening and the excellent breathability of the Gore Infinium Windstopper 150 fabric.Not only does the Infinium Windstopper 150 fabric offer excellent breathability and protection from the elements, it is also extremely soft to the touch and stretchy, allowing for a superb fit to provide excellent comfort. Raw-edge waist and wrist cuffs also improve fit and comfort. The excellent weather protection of the Windstopper fabric is improved even further by the addition of a DWR treatment as well as selective seam sealing, with addition seam sealing and double stitching on the shoulders. Along with a waterproof YKK Vislon Zipper, the jacket is essentially waterproof while not compromising it's excellent dry weather performance. An occasional drop may seep through the seams, but you'll still be warm and dry with the jacket letting any internal moisture evaporate with ease. The Alpha also features 3 rear pockets with reflective laser-cut drain holes to boost practicality and visibility. For riders looking for versatile jacket for all riding conditions, the Castelli Alpha ROS 2 is one of the best around.
The Alpha ROS 2 is Castelli's ultimate jacket, bringing warmth, breathability and excellent level of rain protection teamed with a comfort, soft fit and feel. The Alpha ROS 2 sets the standard by which all others are measured.Gore Infinium Windstopper 150 fabric provides excellent protection from the elementsSeam sealing and double stitching on shoulders keep you mostly dryAlpha construction separates water/wind protection from insulation layerBetter ventilation and moisture evaporation thanks to separate insulation layerStretch fabrics and raw-edge waist and wrist cuffs improve comfort and fitThere was a time when your cycling wardrobe consisted of items for all occasions, as your wet weather gear was to clammy and flappy in the dry and your dry weather kit just didn't hack it in the rain. Castelli's Gabba and Perfetto ranges bridged the gap, but the Alpha ROS 2 takes all-weather performance to the next level. The Alpha ROS 2 features a clever two-layer construction to separate the insulation layer from the protective outer shell, giving better ventilation and moisture evaporation. Further boosting ventilation is the double front opening and the excellent breathability of the Gore Infinium Windstopper 150 fabric.Not only does the Infinium Windstopper 150 fabric offer excellent breathability and protection from the elements, it is also extremely soft to the touch and stretchy, allowing for a superb fit to provide excellent comfort. Raw-edge waist and wrist cuffs also improve fit and comfort. The excellent weather protection of the Windstopper fabric is improved even further by the addition of a DWR treatment as well as selective seam sealing, with addition seam sealing and double stitching on the shoulders. Along with a waterproof YKK Vislon Zipper, the jacket is essentially waterproof while not compromising it's excellent dry weather performance. An occasional drop may seep through the seams, but you'll still be warm and dry with the jacket letting any internal moisture evaporate with ease. The Alpha also features 3 rear pockets with reflective laser-cut drain holes to boost practicality and visibility. For riders looking for versatile jacket for all riding conditions, the Castelli Alpha ROS 2 is one of the best around.
The Alpha ROS 2 is Castelli's ultimate jacket, bringing warmth, breathability and excellent level of rain protection teamed with a comfort, soft fit and feel. The Alpha ROS 2 sets the standard by which all others are measured.Gore Infinium Windstopper 150 fabric provides excellent protection from the elementsSeam sealing and double stitching on shoulders keep you mostly dryAlpha construction separates water/wind protection from insulation layerBetter ventilation and moisture evaporation thanks to separate insulation layerStretch fabrics and raw-edge waist and wrist cuffs improve comfort and fitThere was a time when your cycling wardrobe consisted of items for all occasions, as your wet weather gear was to clammy and flappy in the dry and your dry weather kit just didn't hack it in the rain. Castelli's Gabba and Perfetto ranges bridged the gap, but the Alpha ROS 2 takes all-weather performance to the next level. The Alpha ROS 2 features a clever two-layer construction to separate the insulation layer from the protective outer shell, giving better ventilation and moisture evaporation. Further boosting ventilation is the double front opening and the excellent breathability of the Gore Infinium Windstopper 150 fabric.Not only does the Infinium Windstopper 150 fabric offer excellent breathability and protection from the elements, it is also extremely soft to the touch and stretchy, allowing for a superb fit to provide excellent comfort. Raw-edge waist and wrist cuffs also improve fit and comfort. The excellent weather protection of the Windstopper fabric is improved even further by the addition of a DWR treatment as well as selective seam sealing, with addition seam sealing and double stitching on the shoulders. Along with a waterproof YKK Vislon Zipper, the jacket is essentially waterproof while not compromising it's excellent dry weather performance. An occasional drop may seep through the seams, but you'll still be warm and dry with the jacket letting any internal moisture evaporate with ease. The Alpha also features 3 rear pockets with reflective laser-cut drain holes to boost practicality and visibility. For riders looking for versatile jacket for all riding conditions, the Castelli Alpha ROS 2 is one of the best around.
Castelli Alpha Ultimate Insulated JacketWaterproof, warm and with a double-layer Alpha construction for temperature control, the Castelli Alpha Ultimate Insulated Jacket is the ultimate winter cycling jacket.If you're serious about your winter training, you'll be wanting to keep warm and dry when the weather is against you. And here the Alpha Ultimate Insulated Jacket ensures there's nothing to stop you from building fitness. Polartec® Alpha®Keeping you warm but without adding weight, Polartec® Alpha® active insulation forms an inner layer of the jacket. Made for the demands of aerobic activities, Alpha® maintains warmth while also preventing excess sweat from chilling you from the inside. With terrain and effort levels rising and falling it maintains outstanding comfort.Two-Layer ConstructionWhen the weather turns wet and wild, the waterproof Polartec® NeoShell® outer layer provides dependable rain protection. The four-way stretch also gives a snug fit so there's no wasted energy. Seams most exposed to the weather at externally taped to prevent seepage over the course of your ride. It’s breathable too, preventing excess sweat build-up.Next comes the insulated Alpha layer as mentioned above. Both outer and inner feature their own zippers, letting you control ventilation independent of each layer. During a climb or hard efforts open up the outer to boost airflow. This keeps you drier and sweat-free for when you zip back up for the fast downhill or you back off the pace.Performance FeaturesAll the details needed for a comfortable winter ride have been honed. A no-sew bonded waist hem gives a snug and flat fit. Anatomic cuffs work with winter gloves to fully seal out the elements. And reflective Reflex details keep you more visible in low light.Features:Materials: 100% Polyamide; Inner: 100% PolyesterWaterproof Polartec® NeoShell® 4-way stretch outer fabricInsulating layer in Polartec® Alpha® active insulation for more warmth and breathabilityCritical external seam taping for effectively waterproof protection in normal riding conditionsDouble-layer Alpha construction separates an insulating layer from wind/water barrier to let you better regulate ventilationDouble-opening YKK® Vislon® zipper slides easily for better regulation of airflowNo-sew bonded hem lies flat and seals out windAnatomically shaped cuff integrates with glove to prevent cold wind or water from entering at wrist3 rear pocketsReflex zones at lower back, on shoulders, and around wristsZippered secure side pocket for valuablesWeight: 371gSuggested Temperature range: -5 to 12 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Alpha Ultimate Insulated JacketWaterproof, warm and with a double-layer Alpha construction for temperature control, the Castelli Alpha Ultimate Insulated Jacket is the ultimate winter cycling jacket.If you're serious about your winter training, you'll be wanting to keep warm and dry when the weather is against you. And here the Alpha Ultimate Insulated Jacket ensures there's nothing to stop you from building fitness. Polartec® Alpha®Keeping you warm but without adding weight, Polartec® Alpha® active insulation forms an inner layer of the jacket. Made for the demands of aerobic activities, Alpha® maintains warmth while also preventing excess sweat from chilling you from the inside. With terrain and effort levels rising and falling it maintains outstanding comfort.Two-Layer ConstructionWhen the weather turns wet and wild, the waterproof Polartec® NeoShell® outer layer provides dependable rain protection. The four-way stretch also gives a snug fit so there's no wasted energy. Seams most exposed to the weather at externally taped to prevent seepage over the course of your ride. It’s breathable too, preventing excess sweat build-up.Next comes the insulated Alpha layer as mentioned above. Both outer and inner feature their own zippers, letting you control ventilation independent of each layer. During a climb or hard efforts open up the outer to boost airflow. This keeps you drier and sweat-free for when you zip back up for the fast downhill or you back off the pace.Performance FeaturesAll the details needed for a comfortable winter ride have been honed. A no-sew bonded waist hem gives a snug and flat fit. Anatomic cuffs work with winter gloves to fully seal out the elements. And reflective Reflex details keep you more visible in low light.Features:Materials: 100% Polyamide; Inner: 100% PolyesterWaterproof Polartec® NeoShell® 4-way stretch outer fabricInsulating layer in Polartec® Alpha® active insulation for more warmth and breathabilityCritical external seam taping for effectively waterproof protection in normal riding conditionsDouble-layer Alpha construction separates an insulating layer from wind/water barrier to let you better regulate ventilationDouble-opening YKK® Vislon® zipper slides easily for better regulation of airflowNo-sew bonded hem lies flat and seals out windAnatomically shaped cuff integrates with glove to prevent cold wind or water from entering at wrist3 rear pocketsReflex zones at lower back, on shoulders, and around wristsZippered secure side pocket for valuablesWeight: 371gSuggested Temperature range: -5 to 12 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Alpha Ultimate Insulated JacketWaterproof, warm and with a double-layer Alpha construction for temperature control, the Castelli Alpha Ultimate Insulated Jacket is the ultimate winter cycling jacket.If you're serious about your winter training, you'll be wanting to keep warm and dry when the weather is against you. And here the Alpha Ultimate Insulated Jacket ensures there's nothing to stop you from building fitness. Polartec® Alpha®Keeping you warm but without adding weight, Polartec® Alpha® active insulation forms an inner layer of the jacket. Made for the demands of aerobic activities, Alpha® maintains warmth while also preventing excess sweat from chilling you from the inside. With terrain and effort levels rising and falling it maintains outstanding comfort.Two-Layer ConstructionWhen the weather turns wet and wild, the waterproof Polartec® NeoShell® outer layer provides dependable rain protection. The four-way stretch also gives a snug fit so there's no wasted energy. Seams most exposed to the weather at externally taped to prevent seepage over the course of your ride. It’s breathable too, preventing excess sweat build-up.Next comes the insulated Alpha layer as mentioned above. Both outer and inner feature their own zippers, letting you control ventilation independent of each layer. During a climb or hard efforts open up the outer to boost airflow. This keeps you drier and sweat-free for when you zip back up for the fast downhill or you back off the pace.Performance FeaturesAll the details needed for a comfortable winter ride have been honed. A no-sew bonded waist hem gives a snug and flat fit. Anatomic cuffs work with winter gloves to fully seal out the elements. And reflective Reflex details keep you more visible in low light.Features:Materials: 100% Polyamide; Inner: 100% PolyesterWaterproof Polartec® NeoShell® 4-way stretch outer fabricInsulating layer in Polartec® Alpha® active insulation for more warmth and breathabilityCritical external seam taping for effectively waterproof protection in normal riding conditionsDouble-layer Alpha construction separates an insulating layer from wind/water barrier to let you better regulate ventilationDouble-opening YKK® Vislon® zipper slides easily for better regulation of airflowNo-sew bonded hem lies flat and seals out windAnatomically shaped cuff integrates with glove to prevent cold wind or water from entering at wrist3 rear pocketsReflex zones at lower back, on shoulders, and around wristsZippered secure side pocket for valuablesWeight: 371gSuggested Temperature range: -5 to 12 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Alpha Ultimate Insulated JacketWaterproof, warm and with a double-layer Alpha construction for temperature control, the Castelli Alpha Ultimate Insulated Jacket is the ultimate winter cycling jacket.If you're serious about your winter training, you'll be wanting to keep warm and dry when the weather is against you. And here the Alpha Ultimate Insulated Jacket ensures there's nothing to stop you from building fitness. Polartec® Alpha®Keeping you warm but without adding weight, Polartec® Alpha® active insulation forms an inner layer of the jacket. Made for the demands of aerobic activities, Alpha® maintains warmth while also preventing excess sweat from chilling you from the inside. With terrain and effort levels rising and falling it maintains outstanding comfort.Two-Layer ConstructionWhen the weather turns wet and wild, the waterproof Polartec® NeoShell® outer layer provides dependable rain protection. The four-way stretch also gives a snug fit so there's no wasted energy. Seams most exposed to the weather at externally taped to prevent seepage over the course of your ride. It’s breathable too, preventing excess sweat build-up.Next comes the insulated Alpha layer as mentioned above. Both outer and inner feature their own zippers, letting you control ventilation independent of each layer. During a climb or hard efforts open up the outer to boost airflow. This keeps you drier and sweat-free for when you zip back up for the fast downhill or you back off the pace.Performance FeaturesAll the details needed for a comfortable winter ride have been honed. A no-sew bonded waist hem gives a snug and flat fit. Anatomic cuffs work with winter gloves to fully seal out the elements. And reflective Reflex details keep you more visible in low light.Features:Materials: 100% Polyamide; Inner: 100% PolyesterWaterproof Polartec® NeoShell® 4-way stretch outer fabricInsulating layer in Polartec® Alpha® active insulation for more warmth and breathabilityCritical external seam taping for effectively waterproof protection in normal riding conditionsDouble-layer Alpha construction separates an insulating layer from wind/water barrier to let you better regulate ventilationDouble-opening YKK® Vislon® zipper slides easily for better regulation of airflowNo-sew bonded hem lies flat and seals out windAnatomically shaped cuff integrates with glove to prevent cold wind or water from entering at wrist3 rear pocketsReflex zones at lower back, on shoulders, and around wristsZippered secure side pocket for valuablesWeight: 371gSuggested Temperature range: -5 to 12 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Alpha Ultimate Insulated JacketWaterproof, warm and with a double-layer Alpha construction for temperature control, the Castelli Alpha Ultimate Insulated Jacket is the ultimate winter cycling jacket.If you're serious about your winter training, you'll be wanting to keep warm and dry when the weather is against you. And here the Alpha Ultimate Insulated Jacket ensures there's nothing to stop you from building fitness. Polartec® Alpha®Keeping you warm but without adding weight, Polartec® Alpha® active insulation forms an inner layer of the jacket. Made for the demands of aerobic activities, Alpha® maintains warmth while also preventing excess sweat from chilling you from the inside. With terrain and effort levels rising and falling it maintains outstanding comfort.Two-Layer ConstructionWhen the weather turns wet and wild, the waterproof Polartec® NeoShell® outer layer provides dependable rain protection. The four-way stretch also gives a snug fit so there's no wasted energy. Seams most exposed to the weather at externally taped to prevent seepage over the course of your ride. It’s breathable too, preventing excess sweat build-up.Next comes the insulated Alpha layer as mentioned above. Both outer and inner feature their own zippers, letting you control ventilation independent of each layer. During a climb or hard efforts open up the outer to boost airflow. This keeps you drier and sweat-free for when you zip back up for the fast downhill or you back off the pace.Performance FeaturesAll the details needed for a comfortable winter ride have been honed. A no-sew bonded waist hem gives a snug and flat fit. Anatomic cuffs work with winter gloves to fully seal out the elements. And reflective Reflex details keep you more visible in low light.Features:Materials: 100% Polyamide; Inner: 100% PolyesterWaterproof Polartec® NeoShell® 4-way stretch outer fabricInsulating layer in Polartec® Alpha® active insulation for more warmth and breathabilityCritical external seam taping for effectively waterproof protection in normal riding conditionsDouble-layer Alpha construction separates an insulating layer from wind/water barrier to let you better regulate ventilationDouble-opening YKK® Vislon® zipper slides easily for better regulation of airflowNo-sew bonded hem lies flat and seals out windAnatomically shaped cuff integrates with glove to prevent cold wind or water from entering at wrist3 rear pocketsReflex zones at lower back, on shoulders, and around wristsZippered secure side pocket for valuablesWeight: 371gSuggested Temperature range: -5 to 12 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.