Castelli Nano Flex Pro Race Bib ShortsThe Castelli Nano Flex Pro Race Bib Shorts are an evolution of the highly-regarded Omloop all-weather cycling shorts. They're now made from Nano Flex 3G, giving a boost to all-weather performance - be it wet, cold, dry or anything in-between the Nano Flex Pro provides the protection you need fr comfortable cycling. Just like their predecessor, the original Omloop thermal shorts, the Nano Flex Pro Race Bib Shorts feature the same extended leg length, the extra 10cm adding warmth across over the knees. You'll also enjoy the luxurious warmth of the Nano Flex fabric. It's as warm as Castelli's Thermoflex fabric, making it superb in cold dry weather. But with its nanotechnology treatment, you'll also get extra protection when rain clouds roll through and burst. For early season races and training where the weather can turn quickly from good to bad and back again, there’s nothing better.The shorts are tailored to fit beautifully but they use fewer seams in their construction. Not only does this reduce any chance of chafing but also ensures fewer areas for water to seep inside. Then there’s the superb Progetto X2 Air seamless seat pad inside. Utilising ventilating perforations, it keeps you more comfortable on endurance road rides. The design allows air and moisture to flow directly to the surface fabric for quick evaporation maintaining dryness. The seat pad is constructed with three-layer components, each dedicated to a specific purpose to create the most comfortable seat pad available.First created by Pro cyclists for the changeable conditions of Spring Classics races, the Nano Flex Pro Race Bib Shorts ensure you to enjoy extra weather protection when it comes to your own springtime training and racing. Features:Materials: 85% Polyamide, 15% ElastaneNano Flex 3G fabric is water repellent, stretchy and warm thanks to the luxuriously soft brushed insideReduced seams for comfort and to prevent water from coming in during wet ridesKnee-length cut for extra warmth that doesn't require a gripper elasticMesh bibs don't add warmth to the upper body so you can dress for theconditionsProgetto X2 Air seamless seat pad for long hours in the saddleSuggested temperature range: 13 to 20 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Aero Race 6.0 Cycling JerseyOriginally designed to save split seconds in road races, Castelli created the aero road race jersey category. The sixth-generation Castelli Aero Race 6.0 Cycling Jersey now gives significant aero advantages, leading to gains that hugely eclipse those offered by the original Castelli aero jerseysFree Speed The name of Castelli's very first aero-focused cycling jersey was the Split Second, launched in 2006. It caused quite a stir when it first appeared as until then performance cycle jerseys were about efficient moisture management with little consideration of progress through the air. The Aero Race 6.0 Cycling Jersey has the DNA of that aero jersey but with modern CFD (Computational Flow Dynamics) to analyse wake-flow, it's so much more efficient at reducing drag, honed for speeds between 30 and 55 km/h.Less drag equals more speed for the same power output. Faster without more training. Now that's an advantage worth having. Cool ComfortIt's not just aerodynamically efficient though. Moisture build-up is also dealt with rapidly and with ruthless efficiency. All fabrics are quick-wicking and a 3D mesh back, similar to their high-performance base layers, ensures you're kept cool and dry as you build up speed. All the effort to go fast will mean you need you to keep fuelled. Fear not, the Aero Race 6.0 has space for all your nutrition via the easy to reach back pockets. The drop tail design keeps them perfectly in position and minimises sagging when they're loaded up too. The Aero Race 6.0 Jersey is Castelli's most aerodynamically advanced design to date and yet it's also their best fitting too - Just ask their WorldTour professional riders. A remarkably comfortable high-performance cycling jersey whether it's your longest days in the saddle or a short and intense criterium race.Features:Materials: 82% Polyester, 18%ElastaneCFD-based fabric placement and seam constructionEngineered for aero efficiency at 30 to 55 km/hAirflow shoulder constructionVelocity Rev2 fabric on front and sleeve3D mesh back for breathabilityElbow-length stretch sleeves with raw-cut edgeYKK® Vislon® zipperDrop tail allows perfect pocket placement while keeping jersey fitting well at the waistWeight: 109gSuggested Temperature range: 18 to 35 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Aero Race 6.0 Cycling JerseyOriginally designed to save split seconds in road races, Castelli created the aero road race jersey category. The sixth-generation Castelli Aero Race 6.0 Cycling Jersey now gives significant aero advantages, leading to gains that hugely eclipse those offered by the original Castelli aero jerseysFree Speed The name of Castelli's very first aero-focused cycling jersey was the Split Second, launched in 2006. It caused quite a stir when it first appeared as until then performance cycle jerseys were about efficient moisture management with little consideration of progress through the air. The Aero Race 6.0 Cycling Jersey has the DNA of that aero jersey but with modern CFD (Computational Flow Dynamics) to analyse wake-flow, it's so much more efficient at reducing drag, honed for speeds between 30 and 55 km/h.Less drag equals more speed for the same power output. Faster without more training. Now that's an advantage worth having. Cool ComfortIt's not just aerodynamically efficient though. Moisture build-up is also dealt with rapidly and with ruthless efficiency. All fabrics are quick-wicking and a 3D mesh back, similar to their high-performance base layers, ensures you're kept cool and dry as you build up speed. All the effort to go fast will mean you need you to keep fuelled. Fear not, the Aero Race 6.0 has space for all your nutrition via the easy to reach back pockets. The drop tail design keeps them perfectly in position and minimises sagging when they're loaded up too. The Aero Race 6.0 Jersey is Castelli's most aerodynamically advanced design to date and yet it's also their best fitting too - Just ask their WorldTour professional riders. A remarkably comfortable high-performance cycling jersey whether it's your longest days in the saddle or a short and intense criterium race.Features:Materials: 82% Polyester, 18%ElastaneCFD-based fabric placement and seam constructionEngineered for aero efficiency at 30 to 55 km/hAirflow shoulder constructionVelocity Rev2 fabric on front and sleeve3D mesh back for breathabilityElbow-length stretch sleeves with raw-cut edgeYKK® Vislon® zipperDrop tail allows perfect pocket placement while keeping jersey fitting well at the waistWeight: 109gSuggested Temperature range: 18 to 35 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Aero Race 6.0 JerseyIf you're a cyclist who loves the thrills of riding fast and testing your fitness in races, the aero-refined Castelli Aero Race 6.0 Jersey is just for you. A limited-edition design delivers fast style too. From Split Second to Aero 6.0The original Castelli aero jersey for road racing first saw light in 2006. It was known as the Split Second jersey. It was at a time when aerodynamics was only really considered important for time trials. Baggy cycling jerseys were the norm until that very first Castelli aero focused jersey appeared.However, with every new version of the jersey, the aerodynamic advantages have proved to be worth far more than just a few split seconds. It’s now known as the Aero Race 6.0 Cycling Jersey - designed to take your velocity up another notch.Using CFD (Computational Flow Dynamics) to analyse wake-flow, the Aero Race 6.0 will fit you even better when you're in an aggressive riding position while seam placement has been optimised to minimise drag. At speeds of between 30 and 55 km/h, the aerodynamic efficiency is optimised giving more speed without an increase of power output compared to a standard jersey. Same training. Same power. More speed. You could almost call it free speed.Cool and FuelledOf course, riding fast, whether in training or racing, is going to generate heat. That, in turn, leads to sweat. However, the Aero Race 6.0 isn't just efficient through the air it's also efficient in dealing with moisture too. Quick wicking and with a 3D mesh back you'll be cooler and drier as you push hard on the pedals.To keep you up to speed and fully fuelled for your ride, the pockets are easily accessible when stuffed with gels and thanks to the drop tail design the jersey remains sleek even when they're loaded up.The Aero Race 6.0 Jersey is Castelli's most aerodynamically advanced design to date and yet it's also their best fitting too - Just ask their WorldTour professional riders. A remarkably comfortable high-performance cycling jersey whether it's your longest days in the saddle or a short and intense criterium race.Features:Materials: 82% Polyester, 18% ElastaneCFD-based fabric placement and seam constructionEngineered for aero efficiency at 30 to 55 km/hAirflow shoulder constructionVelocity Rev2 fabric on front and sleeve3D mesh back for breathabilityElbow-length stretch sleeves with raw-cut edgeYKK® Vislon® zipperDrop tail allows perfect pocket placement while keeping jersey fitting well at the waistWeight: 109gSuggested Temperature range: 18 to 35 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Aero Race 6.0 JerseyIf you're a cyclist who loves the thrills of riding fast and testing your fitness in races, the aero-refined Castelli Aero Race 6.0 Jersey is just for you. A limited-edition design delivers fast style too. From Split Second to Aero 6.0The original Castelli aero jersey for road racing first saw light in 2006. It was known as the Split Second jersey. It was at a time when aerodynamics was only really considered important for time trials. Baggy cycling jerseys were the norm until that very first Castelli aero focused jersey appeared.However, with every new version of the jersey, the aerodynamic advantages have proved to be worth far more than just a few split seconds. It’s now known as the Aero Race 6.0 Cycling Jersey - designed to take your velocity up another notch.Using CFD (Computational Flow Dynamics) to analyse wake-flow, the Aero Race 6.0 will fit you even better when you're in an aggressive riding position while seam placement has been optimised to minimise drag. At speeds of between 30 and 55 km/h, the aerodynamic efficiency is optimised giving more speed without an increase of power output compared to a standard jersey. Same training. Same power. More speed. You could almost call it free speed.Cool and FuelledOf course, riding fast, whether in training or racing, is going to generate heat. That, in turn, leads to sweat. However, the Aero Race 6.0 isn't just efficient through the air it's also efficient in dealing with moisture too. Quick wicking and with a 3D mesh back you'll be cooler and drier as you push hard on the pedals.To keep you up to speed and fully fuelled for your ride, the pockets are easily accessible when stuffed with gels and thanks to the drop tail design the jersey remains sleek even when they're loaded up.The Aero Race 6.0 Jersey is Castelli's most aerodynamically advanced design to date and yet it's also their best fitting too - Just ask their WorldTour professional riders. A remarkably comfortable high-performance cycling jersey whether it's your longest days in the saddle or a short and intense criterium race.Features:Materials: 82% Polyester, 18% ElastaneCFD-based fabric placement and seam constructionEngineered for aero efficiency at 30 to 55 km/hAirflow shoulder constructionVelocity Rev2 fabric on front and sleeve3D mesh back for breathabilityElbow-length stretch sleeves with raw-cut edgeYKK® Vislon® zipperDrop tail allows perfect pocket placement while keeping jersey fitting well at the waistWeight: 109gSuggested Temperature range: 18 to 35 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Aero Race 6.0 JerseyIf you're a cyclist who loves the thrills of riding fast and testing your fitness in races, the aero-refined Castelli Aero Race 6.0 Jersey is just for you. A limited-edition design delivers fast style too. From Split Second to Aero 6.0The original Castelli aero jersey for road racing first saw light in 2006. It was known as the Split Second jersey. It was at a time when aerodynamics was only really considered important for time trials. Baggy cycling jerseys were the norm until that very first Castelli aero focused jersey appeared.However, with every new version of the jersey, the aerodynamic advantages have proved to be worth far more than just a few split seconds. It’s now known as the Aero Race 6.0 Cycling Jersey - designed to take your velocity up another notch.Using CFD (Computational Flow Dynamics) to analyse wake-flow, the Aero Race 6.0 will fit you even better when you're in an aggressive riding position while seam placement has been optimised to minimise drag. At speeds of between 30 and 55 km/h, the aerodynamic efficiency is optimised giving more speed without an increase of power output compared to a standard jersey. Same training. Same power. More speed. You could almost call it free speed.Cool and FuelledOf course, riding fast, whether in training or racing, is going to generate heat. That, in turn, leads to sweat. However, the Aero Race 6.0 isn't just efficient through the air it's also efficient in dealing with moisture too. Quick wicking and with a 3D mesh back you'll be cooler and drier as you push hard on the pedals.To keep you up to speed and fully fuelled for your ride, the pockets are easily accessible when stuffed with gels and thanks to the drop tail design the jersey remains sleek even when they're loaded up.The Aero Race 6.0 Jersey is Castelli's most aerodynamically advanced design to date and yet it's also their best fitting too - Just ask their WorldTour professional riders. A remarkably comfortable high-performance cycling jersey whether it's your longest days in the saddle or a short and intense criterium race.Features:Materials: 82% Polyester, 18% ElastaneCFD-based fabric placement and seam constructionEngineered for aero efficiency at 30 to 55 km/hAirflow shoulder constructionVelocity Rev2 fabric on front and sleeve3D mesh back for breathabilityElbow-length stretch sleeves with raw-cut edgeYKK® Vislon® zipperDrop tail allows perfect pocket placement while keeping jersey fitting well at the waistWeight: 109gSuggested Temperature range: 18 to 35 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Aero Race 6.0 JerseyIf you're a cyclist who loves the thrills of riding fast and testing your fitness in races, the aero-refined Castelli Aero Race 6.0 Jersey is just for you. A limited-edition design delivers fast style too. From Split Second to Aero 6.0The original Castelli aero jersey for road racing first saw light in 2006. It was known as the Split Second jersey. It was at a time when aerodynamics was only really considered important for time trials. Baggy cycling jerseys were the norm until that very first Castelli aero focused jersey appeared.However, with every new version of the jersey, the aerodynamic advantages have proved to be worth far more than just a few split seconds. It’s now known as the Aero Race 6.0 Cycling Jersey - designed to take your velocity up another notch.Using CFD (Computational Flow Dynamics) to analyse wake-flow, the Aero Race 6.0 will fit you even better when you're in an aggressive riding position while seam placement has been optimised to minimise drag. At speeds of between 30 and 55 km/h, the aerodynamic efficiency is optimised giving more speed without an increase of power output compared to a standard jersey. Same training. Same power. More speed. You could almost call it free speed.Cool and FuelledOf course, riding fast, whether in training or racing, is going to generate heat. That, in turn, leads to sweat. However, the Aero Race 6.0 isn't just efficient through the air it's also efficient in dealing with moisture too. Quick wicking and with a 3D mesh back you'll be cooler and drier as you push hard on the pedals.To keep you up to speed and fully fuelled for your ride, the pockets are easily accessible when stuffed with gels and thanks to the drop tail design the jersey remains sleek even when they're loaded up.The Aero Race 6.0 Jersey is Castelli's most aerodynamically advanced design to date and yet it's also their best fitting too - Just ask their WorldTour professional riders. A remarkably comfortable high-performance cycling jersey whether it's your longest days in the saddle or a short and intense criterium race.Features:Materials: 82% Polyester, 18% ElastaneCFD-based fabric placement and seam constructionEngineered for aero efficiency at 30 to 55 km/hAirflow shoulder constructionVelocity Rev2 fabric on front and sleeve3D mesh back for breathabilityElbow-length stretch sleeves with raw-cut edgeYKK® Vislon® zipperDrop tail allows perfect pocket placement while keeping jersey fitting well at the waistWeight: 109gSuggested Temperature range: 18 to 35 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Aero Race 6.0 JerseyIf you're a cyclist who loves the thrills of riding fast and testing your fitness in races, the aero-refined Castelli Aero Race 6.0 Jersey is just for you. A limited-edition design delivers fast style too. From Split Second to Aero 6.0The original Castelli aero jersey for road racing first saw light in 2006. It was known as the Split Second jersey. It was at a time when aerodynamics was only really considered important for time trials. Baggy cycling jerseys were the norm until that very first Castelli aero focused jersey appeared.However, with every new version of the jersey, the aerodynamic advantages have proved to be worth far more than just a few split seconds. It’s now known as the Aero Race 6.0 Cycling Jersey - designed to take your velocity up another notch.Using CFD (Computational Flow Dynamics) to analyse wake-flow, the Aero Race 6.0 will fit you even better when you're in an aggressive riding position while seam placement has been optimised to minimise drag. At speeds of between 30 and 55 km/h, the aerodynamic efficiency is optimised giving more speed without an increase of power output compared to a standard jersey. Same training. Same power. More speed. You could almost call it free speed.Cool and FuelledOf course, riding fast, whether in training or racing, is going to generate heat. That, in turn, leads to sweat. However, the Aero Race 6.0 isn't just efficient through the air it's also efficient in dealing with moisture too. Quick wicking and with a 3D mesh back you'll be cooler and drier as you push hard on the pedals.To keep you up to speed and fully fuelled for your ride, the pockets are easily accessible when stuffed with gels and thanks to the drop tail design the jersey remains sleek even when they're loaded up.The Aero Race 6.0 Jersey is Castelli's most aerodynamically advanced design to date and yet it's also their best fitting too - Just ask their WorldTour professional riders. A remarkably comfortable high-performance cycling jersey whether it's your longest days in the saddle or a short and intense criterium race.Features:Materials: 82% Polyester, 18% ElastaneCFD-based fabric placement and seam constructionEngineered for aero efficiency at 30 to 55 km/hAirflow shoulder constructionVelocity Rev2 fabric on front and sleeve3D mesh back for breathabilityElbow-length stretch sleeves with raw-cut edgeYKK® Vislon® zipperDrop tail allows perfect pocket placement while keeping jersey fitting well at the waistWeight: 109gSuggested Temperature range: 18 to 35 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Aero Race 6.0 JerseyIf you're a cyclist who loves the thrills of riding fast and testing your fitness in races, the aero-refined Castelli Aero Race 6.0 Jersey is just for you. A limited-edition design delivers fast style too. From Split Second to Aero 6.0The original Castelli aero jersey for road racing first saw light in 2006. It was known as the Split Second jersey. It was at a time when aerodynamics was only really considered important for time trials. Baggy cycling jerseys were the norm until that very first Castelli aero focused jersey appeared.However, with every new version of the jersey, the aerodynamic advantages have proved to be worth far more than just a few split seconds. It’s now known as the Aero Race 6.0 Cycling Jersey - designed to take your velocity up another notch.Using CFD (Computational Flow Dynamics) to analyse wake-flow, the Aero Race 6.0 will fit you even better when you're in an aggressive riding position while seam placement has been optimised to minimise drag. At speeds of between 30 and 55 km/h, the aerodynamic efficiency is optimised giving more speed without an increase of power output compared to a standard jersey. Same training. Same power. More speed. You could almost call it free speed.Cool and FuelledOf course, riding fast, whether in training or racing, is going to generate heat. That, in turn, leads to sweat. However, the Aero Race 6.0 isn't just efficient through the air it's also efficient in dealing with moisture too. Quick wicking and with a 3D mesh back you'll be cooler and drier as you push hard on the pedals.To keep you up to speed and fully fuelled for your ride, the pockets are easily accessible when stuffed with gels and thanks to the drop tail design the jersey remains sleek even when they're loaded up.The Aero Race 6.0 Jersey is Castelli's most aerodynamically advanced design to date and yet it's also their best fitting too - Just ask their WorldTour professional riders. A remarkably comfortable high-performance cycling jersey whether it's your longest days in the saddle or a short and intense criterium race.Features:Materials: 82% Polyester, 18% ElastaneCFD-based fabric placement and seam constructionEngineered for aero efficiency at 30 to 55 km/hAirflow shoulder constructionVelocity Rev2 fabric on front and sleeve3D mesh back for breathabilityElbow-length stretch sleeves with raw-cut edgeYKK® Vislon® zipperDrop tail allows perfect pocket placement while keeping jersey fitting well at the waistWeight: 109gSuggested Temperature range: 18 to 35 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Nano Flex Pro Race Bib ShortsThe Castelli Nano Flex Pro Race Bib Shorts are an evolution of the highly-regarded Omloop all-weather cycling shorts. They're now made from Nano Flex 3G, giving a boost to all-weather performance - be it wet, cold, dry or anything in-between the Nano Flex Pro provides the protection you need fr comfortable cycling. Just like their predecessor, the original Omloop thermal shorts, the Nano Flex Pro Race Bib Shorts feature the same extended leg length, the extra 10cm adding warmth across over the knees. You'll also enjoy the luxurious warmth of the Nano Flex fabric. It's as warm as Castelli's Thermoflex fabric, making it superb in cold dry weather. But with its nanotechnology treatment, you'll also get extra protection when rain clouds roll through and burst. For early season races and training where the weather can turn quickly from good to bad and back again, there’s nothing better.The shorts are tailored to fit beautifully but they use fewer seams in their construction. Not only does this reduce any chance of chafing but also ensures fewer areas for water to seep inside. Then there’s the superb Progetto X2 Air seamless seat pad inside. Utilising ventilating perforations, it keeps you more comfortable on endurance road rides. The design allows air and moisture to flow directly to the surface fabric for quick evaporation maintaining dryness. The seat pad is constructed with three-layer components, each dedicated to a specific purpose to create the most comfortable seat pad available.First created by Pro cyclists for the changeable conditions of Spring Classics races, the Nano Flex Pro Race Bib Shorts ensure you to enjoy extra weather protection when it comes to your own springtime training and racing. Features:Materials: 85% Polyamide, 15% ElastaneNano Flex 3G fabric is water repellent, stretchy and warm thanks to the luxuriously soft brushed insideReduced seams for comfort and to prevent water from coming in during wet ridesKnee-length cut for extra warmth that doesn't require a gripper elasticMesh bibs don't add warmth to the upper body so you can dress for theconditionsProgetto X2 Air seamless seat pad for long hours in the saddleSuggested temperature range: 13 to 20 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Nano Flex Pro Race Bib ShortsThe Castelli Nano Flex Pro Race Bib Shorts are an evolution of the highly-regarded Omloop all-weather cycling shorts. They're now made from Nano Flex 3G, giving a boost to all-weather performance - be it wet, cold, dry or anything in-between the Nano Flex Pro provides the protection you need fr comfortable cycling. Just like their predecessor, the original Omloop thermal shorts, the Nano Flex Pro Race Bib Shorts feature the same extended leg length, the extra 10cm adding warmth across over the knees. You'll also enjoy the luxurious warmth of the Nano Flex fabric. It's as warm as Castelli's Thermoflex fabric, making it superb in cold dry weather. But with its nanotechnology treatment, you'll also get extra protection when rain clouds roll through and burst. For early season races and training where the weather can turn quickly from good to bad and back again, there’s nothing better.The shorts are tailored to fit beautifully but they use fewer seams in their construction. Not only does this reduce any chance of chafing but also ensures fewer areas for water to seep inside. Then there’s the superb Progetto X2 Air seamless seat pad inside. Utilising ventilating perforations, it keeps you more comfortable on endurance road rides. The design allows air and moisture to flow directly to the surface fabric for quick evaporation maintaining dryness. The seat pad is constructed with three-layer components, each dedicated to a specific purpose to create the most comfortable seat pad available.First created by Pro cyclists for the changeable conditions of Spring Classics races, the Nano Flex Pro Race Bib Shorts ensure you to enjoy extra weather protection when it comes to your own springtime training and racing. Features:Materials: 85% Polyamide, 15% ElastaneNano Flex 3G fabric is water repellent, stretchy and warm thanks to the luxuriously soft brushed insideReduced seams for comfort and to prevent water from coming in during wet ridesKnee-length cut for extra warmth that doesn't require a gripper elasticMesh bibs don't add warmth to the upper body so you can dress for theconditionsProgetto X2 Air seamless seat pad for long hours in the saddleSuggested temperature range: 13 to 20 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.
Castelli Nano Flex Pro Race Bib ShortsThe Castelli Nano Flex Pro Race Bib Shorts are an evolution of the highly-regarded Omloop all-weather cycling shorts. They're now made from Nano Flex 3G, giving a boost to all-weather performance - be it wet, cold, dry or anything in-between the Nano Flex Pro provides the protection you need fr comfortable cycling. Just like their predecessor, the original Omloop thermal shorts, the Nano Flex Pro Race Bib Shorts feature the same extended leg length, the extra 10cm adding warmth across over the knees. You'll also enjoy the luxurious warmth of the Nano Flex fabric. It's as warm as Castelli's Thermoflex fabric, making it superb in cold dry weather. But with its nanotechnology treatment, you'll also get extra protection when rain clouds roll through and burst. For early season races and training where the weather can turn quickly from good to bad and back again, there’s nothing better.The shorts are tailored to fit beautifully but they use fewer seams in their construction. Not only does this reduce any chance of chafing but also ensures fewer areas for water to seep inside. Then there’s the superb Progetto X2 Air seamless seat pad inside. Utilising ventilating perforations, it keeps you more comfortable on endurance road rides. The design allows air and moisture to flow directly to the surface fabric for quick evaporation maintaining dryness. The seat pad is constructed with three-layer components, each dedicated to a specific purpose to create the most comfortable seat pad available.First created by Pro cyclists for the changeable conditions of Spring Classics races, the Nano Flex Pro Race Bib Shorts ensure you to enjoy extra weather protection when it comes to your own springtime training and racing. Features:Materials: 85% Polyamide, 15% ElastaneNano Flex 3G fabric is water repellent, stretchy and warm thanks to the luxuriously soft brushed insideReduced seams for comfort and to prevent water from coming in during wet ridesKnee-length cut for extra warmth that doesn't require a gripper elasticMesh bibs don't add warmth to the upper body so you can dress for theconditionsProgetto X2 Air seamless seat pad for long hours in the saddleSuggested temperature range: 13 to 20 degrees CBuy Castelli Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.