The Rossignol X2 FW is a perfect option for the novice to intermediate cross country skier looking for moderate support as you are out gliding on the groomed tracks. The T4 Sole drives energy towards your ski and adds responsiveness. COMPATIBLE WITH NNN BINDINGS ONLY, Warranty: One Year, XC Ski Best Use: Groomed, Compatible Binding System: NNN, External Frame: No, Covered Laces: Yes, Insulation Material: Synthetic, Ski Gear Intended Use: Cross Country, Support: On Trail Recreational, Warmth: Warmer, Skill Range: Beginner - Advanced Intermediate, Model Year: 2017, Product ID: 506040, Shipping Restriction: This item is not available for shipment outside of the United States., Model Number: RIEW440.370, GTIN: 3607681868676