Ski skins allow skis to travel uphill. A narrow strip of nylon or mohair fabric designed to mimic sealskin and allow skis to be slid forward, uphill, but not backwards, downhill. Synthetic skins typically grip better while mohair skins made from Angora Goat hair slide better.
Commonly, skins are attached to skis or a splitboard with a loop on the toe of the ski, a reusable adhesive on the base of the skin to stick to the base of the skis, and a clip on the tail. They are usually a few millimeters narrower than the skis to allow the ski edges to still grip the snow. Most skiers purchase skins to closely match the width of their ski and then cut them to a more precise fit, but there are some ski-specific skins that are usually designed to reduce weight as much as possible by optimizing ski and skin elements to fit together perfectly.
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