K2 HELMET WITH SNOW AND BIKE CERTIFICATION . 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.