Twin Skin Superior: All the necessary elements for speed and endurance come together in ideal balance to provide a clear gliding advantage over longer distances. It comes now even about 100g lighter thanks to Air Core Basalite construction and offers consistent grip due to the offset, variable depth design of 100% mohair Twin Skin strips. Cross-country skis without bindings! The binding can be selected in the set configurator. Fischer - Twin Skin Superior Stiff 24/25 Cross Country Ski Classic