A ski boot that fits well is the key to enjoying a great day on the mountain with your family and friends. The anatomically shaped NFS Liner is warm and supportive, providing a comfortable out-of-the-box fit. But if needed, you can add personal customization with Tecnica’s C.A.S. system to solve any additional fit problems. Double Quick-Instep and Lift-Lock buckles allow for easy entry and exit, while the 100 flex strikes the perfect balance between comfort and performance, allowing you to ski until the lifts stop spinning.