With a handy auto-adjust fit system and excellent ventilation, the Anon Mens Highwire Ski Helmet offers all-round comfort while out on the slopes. The protective endura-shell construction guards against any bumps while the expedition fleece liner adds a layer of cushiony softness. Features Sizing: Medium = 57cm-59cm, Large = 59cm-61cm Endura-Shell Construction Auto-Adjust Fit System Simple Fit Fidlock® Snap Helmet Buckle Passive Ventilation Goggle Ventilation Channel Expedition Fleece on Liner and Ear Pads Audio Accessory Compatible Certification: CE 1077B, ASTM 2040 2-Year Warranty Weight: 545g GLOSSARY Endura-Shell two-piece construction features an injection-moulded ABS exterior for long-lasting durability and ding-resistant strength. Fidlock® Snap helmet buckle – a magnetic, ultra-fast and secure buckle that can be opened and fastened with ease, even when wearing gloves. Passive ventilation channels integrated into the helmet draw fresh air in the front and pull moisture out the back. These built-in channels help to keep goggles clear and aid in maintaining a balanced and comfortable climate all day long. Expedition fleece lining: Gives maximum warmth and wicks moisture away when things heat up. Low pile and pill resistant. Simple fit: easy to remove ear pads and liner enable you to wear a beanie and goggle under this helmet for a cool skate-inspired look.