Fox Racing Union BOA Clip-In MTB ShoesEnjoy brilliant comfort, outstanding durability, easy adjustment and tenacious grip, the Fox Racing Union BOA Clip-In MTB Shoes are ready for all your mountain bike trail shredding. Built ToughThe Union BOA Clip-In MTB Shoes feature a one-piece welded seamless upper. This keeps weight to a minimum and at the same time gives the shoes a snug and comfortable fit. It also makes the shoes brilliantly rugged and durable. Just what you need when taking to mountain bike trails. Meanwhile, a moulded toe-cap deflects rock strikes and other debris kicked up off the trail, giving you the confidence to barrel through any trail feature at speed. Ultratac™ GripWith Ultratac™ rubber compound, the sole unit of the UnionShoes provides fantastic grip over all terrain. It's durable too, ensuring it can take the wear and tear of mountain biking. Inside the shoes, a stiffening plate provides extra pedalling efficiency while its moulded shape keeps comfort levels high. Dual BOA® Li2 AdjustmentFast and effortless adjustment is made possible via the twin BOA® Li2 dials. These lightweight adjusters allow you to get the fit dialled just to your liking, across the whole foot. Micro-adjustment allows you to increase or decrease the pressure by a quick twist of the dials either fore or aft. The low profile and impact-resistant dial design also make them durable, exactly what's needed for the demands of mountain biking. Cleat GuidanceThese MTB shoes are compatible with MTB pedal systems, which use cleats with SPD standard (2-bolt standard), e.g.: Shimano SPD, Time ATAC, CrankBrothers, CrankBrothers Race, Look MTB, Xtreme MTB, Wellgo MTB, Ritchey MTB. Features:One-piece welded seamless Upper reduces weight and offers a precise fitDual BOA® Li2 system provides on-the-move micro-adjustability and improved power transfer to the pedalsMoulded Toe Cap designed to protect against rock strikesHigh and low arch support options for a custom fitMoulded internal stiffening plate optimizes power transfer and off-bike comfortUltratac™ rubber compound provides excellent durability and unprecedented grip2-bolt cleat system compatible with all major pedal suppliers (cleats not supplied)Buy Fox Racing Footwear from Chain Reaction Cycles, the World's Largest Online Bike Store.
Fox Racing Union BOA Clip-In MTB ShoesEnjoy brilliant comfort, outstanding durability, easy adjustment and tenacious grip, the Fox Racing Union BOA Clip-In MTB Shoes are ready for all your mountain bike trail shredding. Built ToughThe Union BOA Clip-In MTB Shoes feature a one-piece welded seamless upper. This keeps weight to a minimum and at the same time gives the shoes a snug and comfortable fit. It also makes the shoes brilliantly rugged and durable. Just what you need when taking to mountain bike trails. Meanwhile, a moulded toe-cap deflects rock strikes and other debris kicked up off the trail, giving you the confidence to barrel through any trail feature at speed. Ultratac™ GripWith Ultratac™ rubber compound, the sole unit of the UnionShoes provides fantastic grip over all terrain. It's durable too, ensuring it can take the wear and tear of mountain biking. Inside the shoes, a stiffening plate provides extra pedalling efficiency while its moulded shape keeps comfort levels high. Dual BOA® Li2 AdjustmentFast and effortless adjustment is made possible via the twin BOA® Li2 dials. These lightweight adjusters allow you to get the fit dialled just to your liking, across the whole foot. Micro-adjustment allows you to increase or decrease the pressure by a quick twist of the dials either fore or aft. The low profile and impact-resistant dial design also make them durable, exactly what's needed for the demands of mountain biking. Cleat GuidanceThese MTB shoes are compatible with MTB pedal systems, which use cleats with SPD standard (2-bolt standard), e.g.: Shimano SPD, Time ATAC, CrankBrothers, CrankBrothers Race, Look MTB, Xtreme MTB, Wellgo MTB, Ritchey MTB. Features:One-piece welded seamless Upper reduces weight and offers a precise fitDual BOA® Li2 system provides on-the-move micro-adjustability and improved power transfer to the pedalsMoulded Toe Cap designed to protect against rock strikesHigh and low arch support options for a custom fitMoulded internal stiffening plate optimizes power transfer and off-bike comfortUltratac™ rubber compound provides excellent durability and unprecedented grip2-bolt cleat system compatible with all major pedal suppliers (cleats not supplied)Buy Fox Racing Footwear from Chain Reaction Cycles, the World's Largest Online Bike Store.
Fox Racing Union BOA Clip-In MTB ShoesEnjoy brilliant comfort, outstanding durability, easy adjustment and tenacious grip, the Fox Racing Union BOA Clip-In MTB Shoes are ready for all your mountain bike trail shredding. Built ToughThe Union BOA Clip-In MTB Shoes feature a one-piece welded seamless upper. This keeps weight to a minimum and at the same time gives the shoes a snug and comfortable fit. It also makes the shoes brilliantly rugged and durable. Just what you need when taking to mountain bike trails. Meanwhile, a moulded toe-cap deflects rock strikes and other debris kicked up off the trail, giving you the confidence to barrel through any trail feature at speed. Ultratac™ GripWith Ultratac™ rubber compound, the sole unit of the UnionShoes provides fantastic grip over all terrain. It's durable too, ensuring it can take the wear and tear of mountain biking. Inside the shoes, a stiffening plate provides extra pedalling efficiency while its moulded shape keeps comfort levels high. Dual BOA® Li2 AdjustmentFast and effortless adjustment is made possible via the twin BOA® Li2 dials. These lightweight adjusters allow you to get the fit dialled just to your liking, across the whole foot. Micro-adjustment allows you to increase or decrease the pressure by a quick twist of the dials either fore or aft. The low profile and impact-resistant dial design also make them durable, exactly what's needed for the demands of mountain biking. Cleat GuidanceThese MTB shoes are compatible with MTB pedal systems, which use cleats with SPD standard (2-bolt standard), e.g.: Shimano SPD, Time ATAC, CrankBrothers, CrankBrothers Race, Look MTB, Xtreme MTB, Wellgo MTB, Ritchey MTB. Features:One-piece welded seamless Upper reduces weight and offers a precise fitDual BOA® Li2 system provides on-the-move micro-adjustability and improved power transfer to the pedalsMoulded Toe Cap designed to protect against rock strikesHigh and low arch support options for a custom fitMoulded internal stiffening plate optimizes power transfer and off-bike comfortUltratac™ rubber compound provides excellent durability and unprecedented grip2-bolt cleat system compatible with all major pedal suppliers (cleats not supplied)Buy Fox Racing Footwear from Chain Reaction Cycles, the World's Largest Online Bike Store.
Fox Racing Union BOA Clip-In MTB ShoesEnjoy brilliant comfort, outstanding durability, easy adjustment and tenacious grip, the Fox Racing Union BOA Clip-In MTB Shoes are ready for all your mountain bike trail shredding. Built ToughThe Union BOA Clip-In MTB Shoes feature a one-piece welded seamless upper. This keeps weight to a minimum and at the same time gives the shoes a snug and comfortable fit. It also makes the shoes brilliantly rugged and durable. Just what you need when taking to mountain bike trails. Meanwhile, a moulded toe-cap deflects rock strikes and other debris kicked up off the trail, giving you the confidence to barrel through any trail feature at speed. Ultratac™ GripWith Ultratac™ rubber compound, the sole unit of the UnionShoes provides fantastic grip over all terrain. It's durable too, ensuring it can take the wear and tear of mountain biking. Inside the shoes, a stiffening plate provides extra pedalling efficiency while its moulded shape keeps comfort levels high. Dual BOA® Li2 AdjustmentFast and effortless adjustment is made possible via the twin BOA® Li2 dials. These lightweight adjusters allow you to get the fit dialled just to your liking, across the whole foot. Micro-adjustment allows you to increase or decrease the pressure by a quick twist of the dials either fore or aft. The low profile and impact-resistant dial design also make them durable, exactly what's needed for the demands of mountain biking. Cleat GuidanceThese MTB shoes are compatible with MTB pedal systems, which use cleats with SPD standard (2-bolt standard), e.g.: Shimano SPD, Time ATAC, CrankBrothers, CrankBrothers Race, Look MTB, Xtreme MTB, Wellgo MTB, Ritchey MTB. Features:One-piece welded seamless Upper reduces weight and offers a precise fitDual BOA® Li2 system provides on-the-move micro-adjustability and improved power transfer to the pedalsMoulded Toe Cap designed to protect against rock strikesHigh and low arch support options for a custom fitMoulded internal stiffening plate optimizes power transfer and off-bike comfortUltratac™ rubber compound provides excellent durability and unprecedented grip2-bolt cleat system compatible with all major pedal suppliers (cleats not supplied)Buy Fox Racing Footwear from Chain Reaction Cycles, the World's Largest Online Bike Store.
Fox Racing Union BOA Clip-In MTB ShoesEnjoy brilliant comfort, outstanding durability, easy adjustment and tenacious grip, the Fox Racing Union BOA Clip-In MTB Shoes are ready for all your mountain bike trail shredding. Built ToughThe Union BOA Clip-In MTB Shoes feature a one-piece welded seamless upper. This keeps weight to a minimum and at the same time gives the shoes a snug and comfortable fit. It also makes the shoes brilliantly rugged and durable. Just what you need when taking to mountain bike trails. Meanwhile, a moulded toe-cap deflects rock strikes and other debris kicked up off the trail, giving you the confidence to barrel through any trail feature at speed. Ultratac™ GripWith Ultratac™ rubber compound, the sole unit of the UnionShoes provides fantastic grip over all terrain. It's durable too, ensuring it can take the wear and tear of mountain biking. Inside the shoes, a stiffening plate provides extra pedalling efficiency while its moulded shape keeps comfort levels high. Dual BOA® Li2 AdjustmentFast and effortless adjustment is made possible via the twin BOA® Li2 dials. These lightweight adjusters allow you to get the fit dialled just to your liking, across the whole foot. Micro-adjustment allows you to increase or decrease the pressure by a quick twist of the dials either fore or aft. The low profile and impact-resistant dial design also make them durable, exactly what's needed for the demands of mountain biking. Cleat GuidanceThese MTB shoes are compatible with MTB pedal systems, which use cleats with SPD standard (2-bolt standard), e.g.: Shimano SPD, Time ATAC, CrankBrothers, CrankBrothers Race, Look MTB, Xtreme MTB, Wellgo MTB, Ritchey MTB. Features:One-piece welded seamless Upper reduces weight and offers a precise fitDual BOA® Li2 system provides on-the-move micro-adjustability and improved power transfer to the pedalsMoulded Toe Cap designed to protect against rock strikesHigh and low arch support options for a custom fitMoulded internal stiffening plate optimizes power transfer and off-bike comfortUltratac™ rubber compound provides excellent durability and unprecedented grip2-bolt cleat system compatible with all major pedal suppliers (cleats not supplied)Buy Fox Racing Footwear from Chain Reaction Cycles, the World's Largest Online Bike Store.
Shimano Dura-Ace R9100 Carbon SPD-SL Clipless PedalsDura-Ace SPD-SL pedals deliver pro-level performance with an ultra-low weight, durability and wide carbon construction that lets you lay the power down when you need to and with incredible efficiency too.Key FeaturesInjection-moulded carbon composite body for ultra-low weightExtra-wide platform for unbeatable stability and power transferLow profile 8.8 mm body height from axle centre to cleat contact surfaceWide bearing placement for uniform load distributionStainless steel pedal body plate for increased durabilityOpen design allows for easy access and cleat adjustmentsLarge binding target allows quick engagement while wide cleats provide more efficient pedallingProduct SpecificationsWeight: 228g (pair)Road clearance: 35°Binding: Single sidedCleat included: Blue SH12 2° floatCleats available: Yellow SH-11 6°, Red SH-10 0°Stack height: 14.6mmPedal centre: 52mm
Built on 30mm deep aluminum rims that are welded for superior strength this track-racing wheelset delivers an aerodynamic advantage and proven reliability.Versatile enough for everyday training and racing the rims are designed for clincher tires. Wide-dish hubs produce maximum stiffness and solid cartridge bearings laced with ultra-bladed straight-pull spokes form a rigid connection between the rim and hub.The rear hub has a double-sided thread so two cogs can be used on the same wheel making gear changes fast and easy. Key benefits Train and race with a reliable aero advantage. 30mm deep aluminum welded rim offers unbeatable aerodynamics. Low spoke count (20 front and rear). Ultra-bladed spokes. Quick acceleration maximum power transmission and low rolling resistance. Front and rear dishes optimized for incredible stiffness. QRM+ cartridge bearings ensure maximum rolling efficiency. Change tires and swap gears quickly and easily. Rear “flip-flop” hub lets you adjust your gearing depending on the track. Clincher rims for convenient tire changes. Spokes Count: 20 front and rear Lacing: front radial rear crossed 2 Nipples: brass ABS Shape: straight pull flat Material: steel Nipples: steel ABS Rims Tire: clincher Material: S6000 Aluminum Valve hole diameter: 65 mm Height: 30 mm ETRTO size: 622x15C SUP welding technology Drilling: traditional Internal width: 15mm Delivered with User guide Rim tape Fixing nuts Cog lock nut Multifonction adjustment wrench (delivered with rear wheel) Hubs Fixed cog Axle material: steel Front and rear bodies: aluminum QRM+ bearing preload technology Intended use Recommended tire sizes: 18 to 25 mm For a longer longevity of the wheel Mavic recommends that the total weight supported by the wheels doesn't exceed 120kg bike included Minimum cog width : 75mm Max Pressure: see indication on wheel and tire If they differ use the lowest of the 2 Minimum and maximum allowed tyre width: see indication on wheel Maximum tyre pressure: 84bar/121PSI with a 23mm tyre - 785bar/114PSI with a 32mm tyre Versions Color: Black only Compatibility Freewheel: fixed cog only flip-flop hub (one cog possible on each hub side) Cog thread: 137x24TPI Lock ring thread: left thread M33x1 Front axle: for fixing nuts only (included) M9x1 thread Rear axle: for fixing nuts only (included) M9x1 thread Information on specified weight The weight of the wheels is announced at +/-5% in XD/XD-R and Center Lock version without quick release nor valve nor rim tape
The Eclipse™ Spherical is a standout aero road helmet that brings our best technologies together in a light, compact form that’s ideal for road and gravel racing.The sleek outer shell actively streamlines airflow to reduce drag across multiple wind angles, while 14 Wind Tunnel™ vents pull air through the helmet to provide incredible cooling power that rivals our most aggressively vented road helmets.Inside, the ball-and-socket design of Spherical Technology™ is powered by the Mips® brain protection system, which allows the helmet’s outer EPS foam liner to rotate around the inner foam liner during a crash to help redirect impact forces away from the brain.Progressive Layering of both the inner and outer liners help to offer more comprehensive protection, too.The patented Roc Loc® 5 Air system enhances stability and fit, and plush antimicrobial Ionic+™ padding helps absorb sweat and moisture while providing durable anti-microbial performance.SPECIFICATIONSSpherical Technology™,Progressive Layering,Nanobead EPS foam,Ionic+™ anti-microbial padding,Reflective decals.CONSTRUCTIONIn-Mold polycarbonate shell with EPS liner,Full lower hardbody coverage.VENTILATION14 Wind Tunnel™ vents and deep internal channelling.SUPER FIT™ SIZESS 20”–21.75” / 51–55cm,M 21.75”–23.25” / 55–59cm,L 23.25”–24.75” / 59–63cm.CERTIFICATIONComplies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older..
Adjustable Float These pedals feature an adjustable free float that can be fine-tuned to ensure you get the correct float movement, which reduces the cycling strain on your knees. Other pedals only allow a pre-set amount of float or no float at all, but the Zero pedals can be adjusted to your personal preference. This helps to ensure you will be comfortable even at the end of the longest days in the saddle, helps to avoid injury and significantly optimises your power output. Dual-Sided Cleat Engagement Another invaluable feature is the dual-sided entry, which means you can just step down on the pedal and go. No more fumbling or looking down to get into the right position, as the cleat’s design and pedal’s shape ensure that you’ll engage quickly and safely without having to stop and think. Maximum Comfort & Performance Unlike traditional cleats, each of the essential foot positioning adjustments can be changed without affecting each other. Three-Way Adjustment ensures you can set up the cleat’s front/rear and side-to-side positions individually and then choose how much float you want. These unique adjustment settings significantly increase comfort and efficiency while dramatically reducing knee strain and fatigue. Cleat Covers Designed for Safer Walking These Zero pedals come with Speedplay's rubberised cleats, which make those off the bike periods less dangerous if your bike's mechanical problem forces an extended walk on the tarmac, or if you feel the need for a coffee stop. Please Note: Zero Aero pedals are not compatible with Speedplay Light Action and X-Series cleats. Zero Aero cleats are not compatible with Light Action and X-Series pedals. Additional Features: · The Zero cleat positions your foot closer to the top of the spindle for improved power transfer · The thin pedal profile of the Zero pedal lets you power through corners where your rivals coast · Built-in grease port for easy bearing lubrication Technologies: Large, Stable Pedalling Platform: The Zero Pedal System provides the same solid connection as conventional single-sided pedals, but with Speedplay's unique, inverted design the cleat provides the platform once the cleat in engaged Quality Without Compromise: Zero pedals use precision cartridge and needle bearings - three of them instead of two found in most other pedals - which allows the Zero to be thinner for a lower stack height, better cornering clearance, and reduced aerodynamic drag. Like all Speedplay Pedal Systems, the locking edges of Zero pedals and cleats are metal-on-metal for durability and safety, unlike competitors who use engagement edges made of plastic True Locking Mechanism: The Zero's locking mechanism does not rely on spring tension for security, so entering and exiting Zero pedals is easy, but unintended release is virtually impossible
Adjustable Float These pedals feature an adjustable free float that can be fine-tuned to ensure you get the correct float movement, which reduces the cycling strain on your knees. Other pedals only allow a pre-set amount of float or no float at all, but the Zero pedals can be adjusted to your personal preference. This helps to ensure you will be comfortable even at the end of the longest days in the saddle, avoid injury and significantly optimise your power output. Dual-Sided Cleat Engagement Another invaluable feature is the dual-sided entry, which means you can just step down on the pedal and go. No more fumbling or looking down to get into the right position, as the cleat’s design and the pedal’s shape ensure that you’ll engage quickly and safely without having to stop and think. Maximum Comfort & Performance Unlike traditional cleats, each of the essential foot positioning adjustments can be changed without affecting each other. Three-Way Adjustment technology ensures you can set up the cleat’s front/rear and side-to-side positions individually and then choose how much float you want. These unique adjustment settings significantly increase comfort and efficiency, while dramatically reducing knee strain and fatigue. Cleat Covers Designed for Safer Walking These Zero pedals come with Speedplay's rubberised cleats, which make those off-the-bike periods less dangerous if your bike's mechanical problem forces an extended walk on the tarmac, or if you feel the need for a coffee stop. Additional Features: · The Zero cleat positions your foot closer to the top of the spindle for improved power transfer. · The thin pedal profile lets you power through corners where your rivals coast. · Built-in grease port for easy bearing lubrication. · Extended spindle options available to select. Technologies: Large, Stable Pedalling Platform: The Zero Pedal System provides the same solid connection as conventional single-sided pedals, but with Speedplay's unique, inverted design the cleat provides the platform once the cleat is engaged. Quality Without Compromise: Zero pedals use precision cartridge and needle bearings - three of them instead of two found in most other pedals - which allows the Zero to be thinner for a lower stack height, better cornering clearance, and reduced aerodynamic drag. Like all Speedplay Pedal Systems, the locking edges of Zero pedals and cleats are metal-on-metal for durability and safety, unlike competitors who use engagement edges made of plastic. True Locking Mechanism: The Zero's locking mechanism does not rely on spring tension for security, so entering and exiting Zero pedals is easy, but unintended release is virtually impossible.
Giro Eclipse Spherical HelmetThe Giro Eclipse Spherical Helmet has been created to offer refined aerodynamic performance matched with agressively cool airflow and the best in head-protecting technology. For road and gravel racing and training it's the ultimate pick.Thanks to its smooth, streamlined design, the Eclipse Spherical Helmet delivers low-drag performance for fast riding. But of course it's not just about speed, it also gives you a mix of technology to keep you safer in the event of a crash. This mix of technologies includes Spherical Technology™, power by MIPS® brain protection systems, and Giro's own Progressive Layering™ construction. At it's heart the in-mould design features a shock-dissipating EPS foam liner, protecting your head in an impact. And here the Progressive Layering™ also focuses on providing separate inner and outer layers to manage high and low-speed impacts.To the outside, the polycarbonate shell offers a durable and tough layer to resist knocks and bumps and this coverage extends fully to the bottom for maximum coverage. Spherical Technology powered by MIPS® (Multi-Directional Impact Protection System) As you'd expect, all Giro helmets are designed to not only meet but also exceed stringent safety standards. The ball and socket Spherical Technology, powered by MIPS, allows the outer liner to rotate around the inner liner during a crash, ensuring you enjoy an extra level of brain-protecting technology, designed to redirect energy and provide more protection in certain impacts.This system also eliminates contact of plastic and slip planes with your skin, boosting your overall riding comfort.Airflow OptimisedWhen you're pushing out the watts, you'll soon be feeling the heat and building a sweat. But here the 14 Wind Tunnel™ vents deliver the airflow you need to stay cooler when a more intense pace starts to bite. Once the air is inside it's channelled over your head to boost comfort while sweaty air is expelled out the back. This cool airflow is complemented by the Ionic+™ anti-microbial padding. With its resistance to bacteria, this padding keeps you feeling fresh and prevents that itchy feeling that comes with less premium padding. Roc Loc® Air 5 SystemSetting the standard for ease of adjustment, stability and comfort, the Roc Loc® Air 5 System ensures you always get the right fit of your helmet. It allows for precise adjustment, with both fore-aft tilt and single-hand dial adjustment. It also allows for uncompromised airflow to your head. The design allows a smooth passage of cooling air through the vents and along the inner air channels. And it’s lighter than comparable systems too, making it the ultimate in skull-hugging luxury.Features:In-Mould polycarbonate shell with EPS linerFull lower hardbody coverageSpherical Technology™Progressive LayeringNanobead EPS foamIonic+™ anti-microbial paddingReflective decals14 Wind Tunnel™ vents and deep internal channellingBuy Giro Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.
Giro Eclipse Spherical HelmetThe Giro Eclipse Spherical Helmet has been created to offer refined aerodynamic performance matched with agressively cool airflow and the best in head-protecting technology. For road and gravel racing and training it's the ultimate pick.Thanks to its smooth, streamlined design, the Eclipse Spherical Helmet delivers low-drag performance for fast riding. But of course it's not just about speed, it also gives you a mix of technology to keep you safer in the event of a crash. This mix of technologies includes Spherical Technology™, power by MIPS® brain protection systems, and Giro's own Progressive Layering™ construction. At it's heart the in-mould design features a shock-dissipating EPS foam liner, protecting your head in an impact. And here the Progressive Layering™ also focuses on providing separate inner and outer layers to manage high and low-speed impacts.To the outside, the polycarbonate shell offers a durable and tough layer to resist knocks and bumps and this coverage extends fully to the bottom for maximum coverage. Spherical Technology powered by MIPS® (Multi-Directional Impact Protection System) As you'd expect, all Giro helmets are designed to not only meet but also exceed stringent safety standards. The ball and socket Spherical Technology, powered by MIPS, allows the outer liner to rotate around the inner liner during a crash, ensuring you enjoy an extra level of brain-protecting technology, designed to redirect energy and provide more protection in certain impacts.This system also eliminates contact of plastic and slip planes with your skin, boosting your overall riding comfort.Airflow OptimisedWhen you're pushing out the watts, you'll soon be feeling the heat and building a sweat. But here the 14 Wind Tunnel™ vents deliver the airflow you need to stay cooler when a more intense pace starts to bite. Once the air is inside it's channelled over your head to boost comfort while sweaty air is expelled out the back. This cool airflow is complemented by the Ionic+™ anti-microbial padding. With its resistance to bacteria, this padding keeps you feeling fresh and prevents that itchy feeling that comes with less premium padding. Roc Loc® Air 5 SystemSetting the standard for ease of adjustment, stability and comfort, the Roc Loc® Air 5 System ensures you always get the right fit of your helmet. It allows for precise adjustment, with both fore-aft tilt and single-hand dial adjustment. It also allows for uncompromised airflow to your head. The design allows a smooth passage of cooling air through the vents and along the inner air channels. And it’s lighter than comparable systems too, making it the ultimate in skull-hugging luxury.Features:In-Mould polycarbonate shell with EPS linerFull lower hardbody coverageSpherical Technology™Progressive LayeringNanobead EPS foamIonic+™ anti-microbial paddingReflective decals14 Wind Tunnel™ vents and deep internal channellingBuy Giro Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.