Heavily Insulated With 600 Grams Of Thinsulate, This All Full-Grain Leather Boot Offers Ultimate Waterproof Protection And Superior Slip Resistance In Icy Conditions Through The Use Of The Vibram 360 Fire & Ice Outsole Made Of A Special Rubber Compound That Will Not Harden In Cold Temperatures. Boot Features Height: 8" (Standard Military Height) Upper: 100% Cattlehide Leather Midsole: Highly Cushioned, Shock Absorbent Midsole Outsole: 100% Rubber Vibram 360 Fire & Ice Compound Designed To Improve Traction In Icy Conditions Insole: Single Density Molded Removable Insert Special Features Vanguard Running Shoe Sole Construction Durably Waterproof And Highly Breathable Gore-Tex Fabric 600G Thinsulate Insulation Ar 670-1 Compliant