There is no better feeling than getting out on your bike and exploring new and exciting trails, and the Nomad helmet is designed to do exactly that. With its lightweight in-mold construction, and Ergo Fit adjustment, the Nomad delivers exceptional comfort no matter how long you are out on your bike. The trail-specific design includes plenty of lower coverage, and with MIPS technology to boot, you can ride with confidence and focus on the singletrack ahead. The trails are waiting, and with our Nomad helmet, you have no excuse but to get out and ride. - One Size = 53–60cm

There is no better feeling than getting out on your bike and exploring new and exciting trails, and the Nomad helmet is designed to do exactly that. With its lightweight in-mold construction, and Ergo Fit adjustment, the Nomad delivers exceptional comfort no matter how long you are out on your bike. The trail-specific design includes plenty of lower coverage, and with MIPS technology to boot, you can ride with confidence and focus on the singletrack ahead. The trails are waiting, and with our Nomad helmet, you have no excuse but to get out and ride. - 15 vents - Compliance: CPSC bicycle - MIPS (Multi-directional Impact Protection System) - a leading slip plane technology designed to reduce rotational forces that can result from certain impacts - Construction: Fusion in-mold polycarbonate shell - a process pioneered by Bell bonds the helmet's outer shell to the EPS foam liner to create a sturdier helmet. - Removable visor - Fit System: Ergo fit - sleek, easy-to-use dial system for one-handed adjustments - Retention System: No-twist tri-glides: quick-adjust fasteners that help keep straps flat and properly positioned - 333 grams

Adventure Seeker With more all-around coverage, the Sidetrack II is suited for the adventurous grom in your life. This all-mountain helmet offers a removable visor, an easy adjustable fit system, our sweat guide padding, and ready-for-action style that will get your child motivated to hit the trail! Specs - Integrated MIPS (Multi-directional Impact Protection System): MIPS is designed to reduce rotational forces that can result from certain impacts. By integrating the mips slip plane into the fit system, we are able to reduce complexity and weight for a compact, better ventilated helmet that fits more closely to the head. - Construction: Fusion in-mold polycarbonate shell - a process pioneered by Bell bonds the helmet's outer shell to the EPS foam liner to create a sturdier helmet. - Number of vents: 14 - Interior/liner type: Sweat guide pad design pulls moisture away from the brow pad and away from eyewear - Fit system: Ergo Fit - Sleek, easy-to-use dial system for one-handed adjustments (integrated with MIPS layer) - Universal Toddler = 45 – 52cm - Universal Child = 47 – 54cm - Universal Youth = 50 – 57cm

With more all-around coverage, the Sidetrack II is suited for the adventurous grom in your life. This all-mountain helmet offers a removable visor, an easy adjustable fit system, our sweat guide padding, and ready-for-action style that will get your child motivated to hit the trail! - 14 vents - Integrated MIPS (Multi-directional Impact Protection System) - MIPS is designed to reduce rotational forces that can result from certain impacts. By integrating the MIPS slip plane into the fit system, we are able to reduce complexity and weight for a compact, better ventilated helmet that fits more closely to the head. - Construction: Fusion in-mold polycarbonate shell - a process pioneered by Bell bonds the helmet's outer shell to the EPS foam liner to create a sturdier helmet. - Fit System: Ergo fit - sleek, easy-to-use dial system for one-handed adjustments (integrated with MIPS layer) - Retention System: No-twist tri-glides: quick-adjust fasteners that help keep straps flat and properly positioned - Interior: Sweat guide pad design pulls moisture away from the brow pad and away from eyewear

Empower little trailblazers with the Sidetrack II, designed for maximum comfort and an ergonomic, lightweight fit. The easy-adjust dial system snugs the helmet perfectly with a twist of the dial and this helmet comes with an array of on-trend color options to stoke out any kid. ADVENTURE SEEKER With more all-around coverage, the Sidetrack II is suited for the adventurous grom in your life. This all-mountain helmet offers a removable visor, an easy adjustable fit system, our sweat guide padding, and ready-for-action style that will get your child motivated to hit the trail! SPECS & TECHNOLOGY - Fusion in-mold polycarbonate shell—a process pioneered by Bell bonds the helmet's outer shell foam liner to create a sturdier helmet. - Fit System: Ergo fit—sleek, easy-to-use dial system for one-handed adjustments - Weight: 320g - No-Twist Tri-Glides: Quick-adjust fasteners that help keep straps flat and properly positioned - Sweat Guide: Sweat Guide pad design pulls moisture away from the brow pad and away from eyewear

The Fixture MIPS brings confident mountain bike style and breezy ventilation together in a compact design that complements nearly any ride -- especially when there's dirt under tread. Some of Giro's best features, like In-Mold construction coupled with the ease and comfort of their acclaimed Roc Loc Sport fit system, offer the versatility you need to ride everything from fire-road adventures to swooping singletrack trails. The Roc Loc also is seamlessly integrated with the Multi-Directional Impact Protection System (MIPS), which can redirect energy and provide more protection in certain impacts.

Sometimes the smartest designs also are the simplest. The Isode MIPS is an easy fit for riders who want classic style with the latest features, yet don’t want to spend a fortune or compromise comfort. The Isode includes several features found in Giro's premium helmets, like In-Mold construction to keep the weight low and the easy one-handed adjustments of their acclaimed Roc Loc Sport MIPS system, for a sure fit at the turn of a dial. It’s the perfect companion for your riding, no matter how fast or how far you ride. The Isode MIPS helmet includes several features found in our premium helmets, like In-Mold construction to keep the weight low and the easy one-handed adjustments of our acclaimed Roc Loc Sport MIPS system, for a sure fit at the turn of a dial. It's the perfect companion for your riding, no matter how fast or how far you ride.

The Scamp MIPS is packed with amazing features, including some of the same elements found in Giro's best adult helmets, all in a smaller package designed to fit your child. The Roc Loc Jr. fit system with pinch-guard buckle provides an easy way to fit your kid’s helmet quickly and securely. The wide size range ensures children can use this helmet as they grow from balance bikes to training wheels. The design is inspired by the adult Montaro MIPS / Montara MIPS, and since the Scamp MIPS is available in a range of kid-friendly colors and designs, children will be excited to wear it every time they ride. Scamp MIPS models are available with the Multi-Directional Impact Protection System. MIPS can redirect energy and provide more protection in certain impacts.

With features like integrated MIPS and an easy Ergo Fit dial, the Nomad 2 Jr. MIPS represents what bicycling is really about: the freedom of getting on your bike and exploring. Start 'Em Young We all remember the sense of freedom our first two-wheeled bike gave us. Now it's time to pass that feeling down to the next generation of shredders with the Nomad 2 Jr. MIPS. With Integrated MIPS technology, a fusion in-mold polycarbonate shell, and plenty of lower coverage, the Nomad 2 Jr. MIPS allows any young hooligan to shine on the trail with the safety and confidence to keep going. [Availability, certification, color, and pricing may vary per region. If outside of the USA, please check with your authorized local dealer for more information.] - INTEGRATED MIPS—Integrated MIPS (Multi-Directional Impact Protection System) is designed to reduce rotational forces that can result from certain impacts. By integrating the MIPS slip plane into the retention system, we are able to reduce complexity and weight for a compact, better ventilated helmet that fits more closely to the head. - ERGO FIT—A lightweight fit system with an easy-to-turn rubber overmolded dial for adjustments (integrated with MIPS). - NO-TWIST TRI-GLIDES—Quick-adjust fasteners that help keep straps flat and properly positioned Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older

With features like integrated MIPS and an easy Ergo Fit dial, the Nomad 2 MIPS represents what bicycling is really about: the freedom of getting on your bike and exploring. Ride Confident The Nomad 2 MIPS meets any aspiring trail rider's needs without compromising fit, function, style, or safety. With our Ergo Fit adjustment system and upgraded padding for all-day support, the Nomad 2 with Integrated MIPS delivers exceptional comfort mile after mile. The trail-specific fusion in-mold polycarbonate shell offers low coverage and is MIPS-equipped for a safe and confident ride. The trails are waiting, and with the Nomad 2 MIPS you have no excuse but to go. Where to first? [Availability, certification, color, and pricing may vary per region. If outside of the USA, please check with your authorized local dealer for more information.] - INTEGRATED MIPS—Integrated MIPS (Multi-Directional Impact Protection System) is designed to reduce rotational forces that can result from certain impacts. By integrating the MIPS slip plane into the retention system, we are able to reduce complexity and weight for a compact, better ventilated helmet that fits more closely to the head. - ERGO FIT—A lightweight fit system with an easy-to-turn rubber overmolded dial for adjustments (integrated with MIPS). - NO-TWIST TRI-GLIDES—Quick-adjust fasteners that help keep straps flat and properly positioned Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older

You need to get out on your bike even in terrible weather. Fitting in an early commute or a mid-winter ride is easier when you're warm, comfortable, and visible. Keeping your head warm in bad weather can be the best way to fend off the elements. - GORE-TEX Product: durably waterproof, windproof and extremely breathable - Reflective band - Elastic hem - Reflective logo - Durably waterproof - Extremely breathable - All weather conditions - Engineered for Cycling - Weight: 0.8 ounces

Quin Sensor for AirDrop/Moventor 2.0 MIPS/MoDrop/MoDrop MIPS

Ticket to Ride Usually, when it comes to value, there's going to be some sort of compromise. With the Avenue, we took a hard line against that. We gave it carefully sculpted vents and a graceful shape. We packed it with the same features and careful touches that define our flagship helmets, such as our Sweat Guide liner and No-Twist Tri-Glides for ease of adjustment. Not to mention integrated MIPS. - MIPS stands for Multi-directional Impact Protection System, which is a leading slip-plane technology inside the helmet designed to reduce rotational forces that can result from certain impacts. - What was once ErgoDial now has an improved dial feel and function (no longer requires a push to turn) and is sleeker and less bulky. - Quick-adjust fasteners that help keep straps flat and properly positioned. - Sweat Guide pad design pulls moisture away from the brow pad and away from eyewear. - 52-57cm / 20.4-22.4-inch

Get out, be seen. Sporty meets urban, a modern shape with ample air-vents is paired with the added safety of a rear light and reflective elements for visibility. Where it thrives: Leisurely rides, the open road What it's built for: Comfort, durability Highlights: - Rear safety light / reflective logos and straps - 19 air vents with front vent netting - One-handed adjustment for easy fitting

Giro created the Bronte MIPS for riders in search of the renowned Giro fit and in need of an extra-large size. Inspired by the sleek style and cooling ventilation of the Register helmet, the Bronte MIPS is at home on pavement or the trail. In-Mold construction is used to make it light without compromising durability, and the acclaimed, adjustable Roc Loc Sport MIPS system makes it easy to custom-tune the fit for comfort and stability. An integrated Multi-Directional Impact Protection System, which can redirect energy and provide more protection in certain impacts, ensures that you get the latest in head protection technology.

The Register MIPS helmet combines sleek design and lightweight construction to match your style, on the road or trail. Made in a comfortable Universal Fit size with Giro's convenient Roc Loc Sport fit system, the Register MIPS adjusts with a simple turn of the dial so you can tune the fit in seconds. A range of colors lets you choose exactly how your on-bike style comes together. Register MIPS models also have an integrated Multi-Directional Impact Protection System, which can redirect energy and provide more protection in certain impacts.

The Vasona MIPS helmet combines sleek, lightweight design with an integrated Multi-Directional Impact Protection System (MIPS) that can redirect energy and provide more protection in certain impacts, giving you the latest in head protection on the road or trail. Made in a comfortable, Universal Fit women's size with Giro's adjustable Roc Loc Sport fit system, the Vasona's fit can be custom-tuned with a simple turn of the dial to make fitting fast and hassle-free. And with a range of colors to suit almost any style, you can choose exactly how your on-bike style comes together.

The FeatherWeight features In-Mold technology to make a custom shape and fit utilizing a thin outer shell that covers and protects high-density EPS foam. - High density EPS in-mold construction - Tested and certified for CPSC and EN 1078 standards for bicycle use - Two sets of padding included for custom fitting - Crow rivets and 10 flow-vents to keep cool - Small/Medium = 50 – 56cm - Large/X-Large = 58 – 61cm

With more all-around coverage and MIPS protection, the Sidetrack II is suited for the adventurous grom in your life. This all-mountain helmet offers a removable visor, an easy adjustable fit system, our sweat guide padding, and ready-for-action style that will get your child motivated to hit the trail! - 14 vents - Integrated MIPS (Multi-directional Impact Protection System) - MIPS is designed to reduce rotational forces that can result from certain impacts. By integrating the MIPS slip plane into the fit system, we are able to reduce complexity and weight for a compact, better ventilated helmet that fits more closely to the head. - Construction: Fusion in-mold polycarbonate shell - a process pioneered by Bell bonds the helmet's outer shell to the EPS foam liner to create a sturdier helmet. - Fit System: Ergo fit - sleek, easy-to-use dial system for one-handed adjustments (integrated with MIPS layer) - Retention System: No-twist tri-glides: quick-adjust fasteners that help keep straps flat and properly positioned - Interior: Sweat guide pad design pulls moisture away from the brow pad and away from eyewear

With more all-around coverage and MIPS protection, the Sidetrack II is suited for the adventurous grom in your life. This all-mountain helmet offers a removable visor, an easy adjustable fit system, our sweat guide padding, and ready-for-action style that will get your child motivated to hit the trail! - 14 vents - Integrated MIPS (Multi-directional Impact Protection System) - MIPS is designed to reduce rotational forces that can result from certain impacts. By integrating the MIPS slip plane into the fit system, we are able to reduce complexity and weight for a compact, better ventilated helmet that fits more closely to the head. - Construction: Fusion in-mold polycarbonate shell - a process pioneered by Bell bonds the helmet's outer shell to the EPS foam liner to create a sturdier helmet. - Fit System: Ergo fit - sleek, easy-to-use dial system for one-handed adjustments (integrated with MIPS layer) - Retention System: No-twist tri-glides: quick-adjust fasteners that help keep straps flat and properly positioned - Interior: Sweat guide pad design pulls moisture away from the brow pad and away from eyewear

The Caden offers a sophisticated style with advanced head protection technology, making it a perfect match for your on-the-go lifestyle. The light, yet tough In-Mold shell helps to resist dents and dings from life on the streets, and the Roc Loc City fit system makes fit/feel adjustment almost effortless. Thoughtful details include reflective accents, a lock port for securing the helmet with your bike or a bag when you’re on the move, and a removable cycling cap-style visor that accents your style without compromising ventilation.

The Hale MIPS stays cool in any situation. It's made with Giro's simple and easy-to-adjust Roc Loc Sport MIPS fit system, which offers a large adjustment range to provide a secure fit for growing kids. It comes with a removable visor, too, and features the same In-Mold construction technology as Giro's best adult models, which bonds the shell to the helmet for a lightweight, durable design. And of course it comes in a range of fun, kid-friendly colors! The Hale MIPS also includes a seamless integrated Multi-Directional Impact Protection System, which can redirect energy and provide more protection in certain impacts.

DETAILS Premium Style for Recreational MTB How do you improve on the #1, top-selling helmet on Earth? Carefully, and with meticulous attention to detail. This updated helmet boasts a revised silhouette, redesigned integration of the Mips® Brain Protection System, and improved cooling power. Whether you're headed for off-road adventure or just a relaxing spin, the Fixture™ Mips II offers the right combination of value, performance, and classic design that can't be beat. With a strong and striking style, quick-dry padding, a simple and durable Roc Loc® Sport fit system, and reflective rear decals, every rider demand has been addressed. After all these updates and improvements, you'd be forgiven for thinking we doubled the price of this second-generation Fixture, but the Fixture Mips II retains its position as the value leader. FEATURES - INTEGRATED MIPS® BRAIN PROTECTION SYSTEM — All Giro helmets are designed to reduce as much energy as possible while meeting and exceeding stringent safety standards. The goal of Giro's Integrated Mips®-equipped helmets is to reduce rotational forces while enhancing fit and comfort by combining the Mips slip plane with the helmet's adjustable fit system. Giro believes that helmets equipped with this technology can reduce the amount of rotational force that may be transferred to rider's brain in certain impacts. Learn more about Mips in the video above. - IN-MOLD CONSTRUCTION — In-Mold Construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbing foam liner. The fusion process allows for better ventilation systems, making in-mold helmets lighter and cooler than traditional helmets. - ROC LOC® SPORT FIT SYSTEM — The Roc Loc® Sport fit system offers easy one-handed operation with a 7cm adjustment range. Its confident clicking feel and sound lets riders know that the helmet is adjusting to a comfortable fit. With comfort similar Roc Loc 5 and ponytail compatibility, the new Roc Loc Sport fit system brings premium function to sport level helmets. - REFLECTIVE DETAILS — Reflective Details enhance visibility at nighttime or in low-light conditions when illuminated by a light source, such as headlights, by returning the light back to the source and reaching the driver's eye. - UNIVERSAL FIT™ SIZING — Our Universal Fit helmets are sculpted to look good and fit great for almost anyone on the first try. By developing proprietary shell sizes based on specific customer groups, and combining them with an easily-adjustable fit system, it's easy for you get the right fit, straight out of the box, without the hassle or expense of trying multiple sizes. HIGHLIGHTS - Quick-dry padding Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older

How do you improve on the #1, top-selling helmet on Earth? Carefully, and with meticulous attention to detail. This updated helmet boasts a revised silhouette, redesigned integration of the Mips® Brain Protection System, and improved cooling power. Whether you're headed for off-road adventure or just a relaxing spin, the Fixture™ Mips II offers the right combination of value, performance, and classic design that can't be beat. With a strong and striking style, quick-dry padding, a simple and durable Roc Loc® Sport fit system, and reflective rear decals, every rider demand has been addressed. After all these updates and improvements, you'd be forgiven for thinking we doubled the price of this second-generation Fixture, but the Fixture Mips II retains its position as the value leader. FEATURES - INTEGRATED MIPS® BRAIN PROTECTION SYSTEM — All Giro helmets are designed to reduce as much energy as possible while meeting and exceeding stringent safety standards. The goal of Giro's Integrated Mips®-equipped helmets is to reduce rotational forces while enhancing fit and comfort by combining the Mips slip plane with the helmet's adjustable fit system. Giro believes that helmets equipped with this technology can reduce the amount of rotational force that may be transferred to rider's brain in certain impacts. Learn more about Mips in the video above. - IN-MOLD CONSTRUCTION — In-Mold Construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbing foam liner. The fusion process allows for better ventilation systems, making in-mold helmets lighter and cooler than traditional helmets. - ROC LOC® SPORT FIT SYSTEM — The Roc Loc® Sport fit system offers easy one-handed operation with a 7cm adjustment range. Its confident clicking feel and sound lets riders know that the helmet is adjusting to a comfortable fit. With comfort similar Roc Loc 5 and ponytail compatibility, the new Roc Loc Sport fit system brings premium function to sport level helmets. - REFLECTIVE DETAILS — Reflective Details enhance visibility at nighttime or in low-light conditions when illuminated by a light source, such as headlights, by returning the light back to the source and reaching the driver's eye. - UNIVERSAL FIT™ SIZING — Our Universal Fit helmets are sculpted to look good and fit great for almost anyone on the first try. By developing proprietary shell sizes based on specific customer groups, and combining them with an easily-adjustable fit system, it's easy for you get the right fit, straight out of the box, without the hassle or expense of trying multiple sizes. HIGHLIGHTS - Quick-dry padding Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older

PROFESSIONAL TECHNOLOGY FOR BEGINNERS The Viantor is the high-quality and lightweight helmet for beginners in which we have used many proven technologies from the professional sport. Let yourself be convinced by a high-quality and safe helmet, which has the advantages of a professional race helmet. For maximum safety, the Viantor has the ActiCage structural reinforcement integrated in the EPS. It provides maximum protection while ensuring optimal ventilation and extreme comfort. The ActiCage allows for large ventilation openings without compromising on the helmet's safety. Due to its ponytail compatibility, the Viantor from ABUS is the first choice for riders with long hair. Multi Shell In-Mold for durable bonding of multi-part outer shell and shock-absorbing helmet material (EPS) - Ponytail compatibility: Helmet well suited for braided hairstyles - Good ventilation with 4 air inlets and 14 air outlets connected with flow channels - Semi-enclosing plastic ring connected to the adjustment system for optimum stability and form-fitness - ActiCage: Structural reinforcement integrated in the EPS to optimize stability - Zoom Ace: Fine-adjustable adjustment system with non-slip adjustment wheel for individual fit

The MET Downtown MIPS is a truly modern touring helmet, ready for a weekend trek or the daily bicycle lane. The internal air-channeling and large number of vents provide exceptional ventilation. The 360° head belt and lightweight design ensures that there will be no pressure points on the skull. Featuring the MIPS-C2 rotational management system, the Downtown is able to slide against the head in the case of a crash, redirecting damaging rotational motion. MIPS is engineered to add extra safety to the standard construction of helmets in case of certain impacts. The MIPS Brain Protection System (BPS) is attached inside the helmet, between the comfort padding and the EPS. - In-mold polycarbonate shell with EPS liner - MIPS-C2 Brain Protection System offers extra protection in the case of certain impacts - Safe-T Twist 2 Fit System - 360° head belt and vertical adjustments offer a customized fit - Straps with an adjustable divider provide a customized fit - Reflective rear decal to enhance visibility - 17 vents are internally engineered for air channeling to improve ventilation and comfort - Comfort pads are hand-washable - CE; AS/NZS; US Sizing: - Small/Medium = 52 – 58cm - Medium/Large = 58 – 61cm

The MET Eldar MIPS has been re-designed for young riders who are fearless and skilled. A high quality helmet for those who aspire to ride the Enduro World Series one day. With extended coverage of the head it offers ultimate protection for those who dare to do more. Featuring the MIPS-C2 brain protection system, the Eldar is able to slide against the head in the case of a crash, redirecting damaging rotational motion. - In-mold polycarbonate shell with EPS liner - Extended head coverage for more thorough protection - MIPS C2 rotational management system is engineered to add protection in case of certain impacts - Exceptionally comfortable and secure on the head thanks to its refined internal shape - 14 vents are internally engineered for air channeling to improve ventilation and comfort - MET Safe-T Twist 2 Fit System - 360° head belt reduces pressure points on the head - Straps with adjustable dividers offer a customized fit - Reflective rear decal to enhance visibility - Comfort pads are hand-washable - Weight: 305g Sizing: - One Size = 52 – 57cm

MET Miles MIPS is a touring helmet with road spirit. It has a comfortable shape and plenty of vents to enhance air flow. Featuring the MIPS-C2 brain protection system, the Miles is able to slide against the head in the case of a crash, redirecting damaging rotational motion. MIPS is engineered to add extra safety to the standard construction of helmets in case of certain impacts. The MIPS Brain Protection System (BPS) is attached inside the helmet, between the comfort padding and the EPS. The unique 360° head belt ensures that there will be no pressure points on the skull, allowing you to achieve the perfect fit. - In-mold polycarbonate shell with EPS liner - MIPS-C2 Brain Protection System offers extra protection in the case of certain impacts - Safe-T Twist 2 Fit System - 360° head belt and vertical adjustments offer a customized fit - Straps with an adjustable divider provide a customized fit - Reflective rear decal to enhance visibility - 18 vents are internally engineered for air channeling to improve ventilation and comfort - Comfort pads are hand-washable - Reflective rear decal - Certifications: CE; AS/NZS; US Sizing: - Small/Medium = 52 – 58cm - Medium/Large = 58 – 61cm

Ready for the trail. Designed for the fast descents and long technical climbs. This is the perfect helmet for committed trail riders and those wanting to explore beyond the beaten path. Where it thrives: Challenging trails, out in the elements What it's built for: Durability, comfort Highlights: - 13 air vents - Deep rear coverage - Adjustable angle visor

The combination of innovative design, the latest technology, outstanding functionality, maximum ventilation, and low weight make the Aventor a real allrounder. The Aventor is the perfect helmet for cyclists who need a cool head for riding in high temperatures and on challenging stages. - Double shell, in-mold construction for durable fusion of the outer shell with the shock-absorbing helmet material (EPS) - Lower edge protection provides the helmet with additional protection coverage - ActiCage, structural reinforcement integrated into the EPS, optimizes stability - Zoom Ace, fine adjustment system with handy dial provides a personalized fit - Half-surrounding plastic ring connected to adjustment system - Ponytail compatible - Fidlock magnetic strap buckle Sizing: - Small: 51 – 55cm - Medium: 54 – 58cm - Large: 57 – 61cm