Perfect for cooler conditions, the C795 features 200G Thinsulate insulation and a Gore-tex waterproof bootie which allows your feet to stay warm, dry and comfortable. Another special feature is the Vibram FIRE & ICE outsole used that is made of a special rubber compound that does not harden in cooler temperatures to provide better traction in icy conditions. Belleville Gore-Tex boots run about 1/2 size larger than your running shoe size. For example, if you wear a size 10, consider trying a size 9.5. VANGUARD RUNNING SHOE CONSTRUCTION Durably waterproof and highly breathable GORE-TEX fabric 200g Thinsulate insulation AR 670-1 Compliant Specifications Height: 8" (Standard Military Height) Upper: 100% cattlehide leather & nylon fabric Midsole: Highly Cushioned, shock-absorbent midsole Outsole: 100% VIBRAM FIRE & ICE compound designed to improve traction in icy conditions Insole: Polyurethane removable insert