K2 Helmet Phase Pro Audio Helmet Black Helmet New Ski Snowboard S M L

  

The Phase is K2's heavy-duty shield against hard-hitters. This hard shell ski helmet is built to last and will carry safety, style, and comfort from season to season with its customizable K2DialedT fit system. A seamlessly integrated K2 Baseline Audio System lets you call in "sick" from the slopes, and Active Matrix ventilation allows for climate control with the flip of a switch. FEATURES: Hard Shell Construction, Full Wrap Liner, Active Matrix Ventilation, K2Dialed Fit, Baseline Audio CIRCUMFERENCE (INCHES) 18 7/8" - 20 1/8" 20 1/2" - 21 5/8" 22" - 23 1/8" 23 1/2" - 24 3/8" CIRCUMFERENCE (CENTIMETERS) 48-51CM 51-55CM 55-59.