The Alpina T 30 NNN Cross Country Ski Boot is an awesome option for skiers looking for a warm and performance filled boot for recreational skiing. A tough and durable outer shell beefs up the T30 as well as keeping unwanted moisture out for drier feet and the added soles provide great traction on icy surfaces. The footbed forms to your foot anatomically for a comfortable and good fit while the insulation will keep your toes warm on the coldest days. Stay on track and keep your feet comfortable with the Alpina T 30 NNN. Compatible with Turnamic, NNN, and Prolink Bindings, Alpina 2C Sole- Better traction on uncertain surfaces., Anatomic Footbed- Great fit with maximum comfort., Thinsulate Insulation- Adds warmth and extra comfort., Lace Cover- Keeps out any unwanted moisture., Warranty: One Year, XC Ski Best Use: Groomed/Ungroomed, Compatible Binding System: NNN, External Frame: Yes, Covered Laces: Yes, Insulation Material: Thinsulate, Ski Gear Intended Use: All Mountain, Support: On Trail Performance, Warmth: Warmer, Model Year: 2022, Product ID: 909631, Model Number: 53551K 41, GTIN: 3838421850051