Rated to -30° C (-22° F), the “Mountaineer” 12-inch boot by Tundra has strong nylon uppers with toggle string top closure and removable insulating felt liners. Waterproof TPR bottoms have deep-cleated non-skid treads. Self-securing adjustable strap at the instep. Men's whole sizes 7 to 13 in XW (4E) width. (Seasonal item; some sizes may sell out -- check puldown for availability.)