NORDIC SKI BOOTS - The Whitewoods 302 NNN Adventure Ski Boots with breathable weatherproof uppers, 100 grams Thinsulate lining & quick dry liner for warmth are designed to provide comfort, style and technical value COMPOSITE MID SOLE - Whitewoods's improved composite mid sole and steel shank provide anatomic support, moisture management and improved ski control METAL LACE GUIDES - These ski boots are lightweight, durable, and have a removable insole and improved metal lace guides for ergonomic lace pressure to help you customize the fit COMPATIBLE WITH NNN BINDING SYSTEM - These unisex adventure ski boots with removable padded footbed, Gaitor D ring, reinforced heel counter and toe box will work with any standard NNN binding system DINTEX MEMBRANE - Dintex, a special membrane provides an impermeable layer to prevent water and wind coming in; this technology will keep you dry and comfortortable from the inside to the outside May run small, consider to take a size up!