The K2 Men's Phase Pro Snow Helmet has a heavy duty hard shell on the outside while still being mighty comfy on the inside. Featuring an Active Matrix Construction which with a flip of the switch allows you to regulate the airflow. Phase Pro also features a washable full wrap liner, K2Dialed Fit System helps create that one of a kind fit and Baseline Audio System that can connect to your mobile device. The K2 Men's Phase Pro Snow Helmet is perfect for many snow adventures from Skiing to Snowboarding. You will have a blast season after season while protecting your head against those hard-hitters.