The lightweight K2 Stash Helmet unveils great features such as the convertible full-wrap liner, granting those who prefer to wear a thin beanie the ability to pop out the liner but still reap the benefits of the 360 K2dialed™ Fit System. The magnetic strap on the goggle clip makes fumbling with your goggle strap behind your head a thing of the past. Also bike certified, the Stash is ready for any adventure, may it be on skis or wheels. FeaturesSizes: S (51-55 cm), M (55-59 cm), L/XL (59-62 cm)Weight: 380 gPassive Channel Ventilation360 K2dialed™ Fit SystemReplaceable, full-length helmet liningMagna-Snap goggle mountCertification: ASTM F2040, CPSC (16 CFR 1203), EN1077: 2007 (Class B), EN1078:2012 + A1:2012