Podium-level performance. A World Cup classic race ski for elite-level athletes the Rossignol X-IUM Premium+ R-Skin Classic Ski features our race-proven edge and air tip technologies for maximum glide and fluid acceleration. The ski's universal flex and camber excels in a wide range of conditions while our R-Skin base offers always-ready kick and glide performance in all conditions. The ski is compatible with the Turnamic(R) binding system for the most natural ski flex and snow feel.Optimized KickAir Tip Classic Race technology concentrates ski mass underfoot for improved kick while lightening the tip for smoother glideMaximum AccelerationEdge Energy Sensor technology maintains tip and tail flexibility and stiffens the waist for increased gliding surface and maximum accelerationUltralight FeelNomex(R) Honeycomb core composed of ultra-lightweight aramid fibers in a honeycomb shape with a high strength-to-weight ratio for powerful elite-level performance Always Ready Kick and GlideR-Skin replaceable mohair insert offers an easy consistent kick and maximum glide with no prep work; Good for 100-150 days on snowSmooth Supple FlexLight+ Capless design reduces weight while balancing torsional rigidity with a smooth supple flex for all conditions stability and increased energy