Get the most from your K2 skis Your K2 skins come with custom tip and tail attachments, why not use them K2's Z clip attachment interfaces perfectly between skis and skins to make the transitions even easier. To get the perfect fit, K2 laser cuts these skins to fit perfectly on your Coomback 114 skis, just open the box and you're ready to go. K2 makes these skins with a 70% mohair and 30% nylon blend to provide smooth glide in addition to durability and grip. If you want to take your K2 skis into the backcountry, these skins are the way to go. Features Benefits a K2 specific tip and tail attachments. a 70% mohair, 30% nylon blend. a Adjustable tail strap length.