The Rossignol X-Ium R-Skin Cross Country Skis w/ Race Pro Bindings lets you set the pace. Experts and top-level racers will appreciate the proven World Cup honeycomb construction that offers very light weight and unprecedented power for proven podium performance. Under the hood of the skis, is that Nomex honeycomb core we mentioned, which features ultra-lightweight Aramid fibers in a honeycomb shape that has a very high strength to weight ratio. The X-Ium ski has a universal flex and camber that excels in a wide range of conditions. A R-Skin replaceable mohair insert offers an easy, consistent kick with maximum glide capability that requires no prep work. Rossignol says that the R-Skin is good for 110-150 days depending on usage before they need to get replaced. (Replacement skins are sold separately) This type of technology really helps skiers when faced with tough, steep climbs or inclines in general, and will reserve more energy for you in your tank so you can finish strong. Active cap construction offers a balance of torsional rigidly and a supple flex from tip to tail for all conditions stability. A K 7000 Skin Race Experience base keeps you gliding fast, even on those dreaded flat spots. If you are racer or just a competitive skier looking to shave time off your personal best, then the Rossignol X-Ium R-Skin Cross Country Skis w/ Race Pro Bindings are just the ski and binding combination for you.