Fischer's used their "Crown" technology for years on their Crown waxless touring skis, and to great success. It was only a matter of time before someone thought of using that same concept - a patterned ski base - and adapting it to use as a climbing ski with normal alpine touring skis. The Fischer Profoil Ranger 90/89 Climbing Skins are exactly that, a very thin sheet of textured ski base material with exceptional glide and excellent grip in most snow. These skins are cut to match the footprint of Ranger 90/89 skis in specific lengths. (The Women's Fischer Ranger 89 W is actually the same width as the men's 90 mm Ranger).