It was only logical that the two most innovative names in water sports and head protection team up to create an unmatched line of water lids. With Hyperlite's input and Bern?s engineering they have created three helmets built for comfort and performance. Features: ? Brock Foam? is exclusive to Hyperlite by Bern helmets. Brock is a light weight foam that allows moisture and air to circulate through it in any direction without the risk of absorption. Brock Foam is also very resilient and returns to its original shape after impact, thus offering protection for multiple impact applications. ? Sink Fit is a unique fit and feel featured in all Hyperlite By Bern Helmets. This construction allows the helmet to ride at a low profile for a better fit and feel. ? Ear Protection is an additional feature to all Hyperlite by Bern Helmets. With a removable snap system, these soft conforming ear flaps offer maximum protection for high speed falls. ? Adjustable Chin Strap allows for a wide array of head shapes and sizes. ? Ladies Specific Sizing is offered in the Kink?d line of helmets. With sizing different than any of the male helmets and softer lines around vents and drain holes, this is a helmet truly built for a woman. Specify Color and Size when ordering. Sizing Chart Mens:S-XXXL Women: XS-XL