Men's CKX Techno Boots are comfort rated to -101 degrees F! Insulation from the ground up! These CKX Techno Boots are toasty warm all winter long: 1,600-denier nylon uppers coated with polyurethane and water repellent; Rubber soles insulated with 200 gram 3M Thinsulate; Removable 5 mm felt liner; Removable 20 mm liner foam with 200 gram 3M Thinsulate Insulation; Velcro belt to tighten for a secure fit; Drawcord at top of uppers to prevent snow and other outside elements from getting inside; Each approx. 12"h., 48 ozs. State Size. Order yours today! AVAILABLE SEPARATELY: Youth CKX Techno Boots - word search in our Store for 'CKX'. Men's CKX Techno Boots