WHITEWOODS 424-NNN SKI BOOTS Flexible 4 way stretch snow cuff with an oversized zipper pull tab. Oversized heel loop for easy entry and comfortable composite mid sole & foot bed for comfort. An internal ergonomic speed lacing system with secure cord lock integrated into a soft padded tongue maintains even lace pressure and avoids pinch points. 200 grams of Thinsulate for warmth and moisture management. NNN touring sole. For touring WHITEWOODS XC TOURING ADVENTURE SKI BOOTS Whitewoods Touring Adventure Nordic boots are designed to provide comfort, style and technical value. All models include Thinsulate, quick dry linings, breathable and water resistant upper materials for dry and warm feet in almost any winter weather. Our improved composite mid sole and steel shank provide anatomic support, moisture management and improved ski control.