Salomon Men's Deemax 2 Dry Winter Boot 100% Textile Rubber sole Shaft measures approximately 4" from arch Heel measures approximately 1 1/2" Platform measures approximately 1" Boot opening measures approximately 9" around 4-way stretch upper Thinsulate lining insulated to -7C Soft Shell comfort Contagrip outsole mixes 20 different compounds, lug geometry and density A bungee lacing system and hook-and-loop strap keep this boot's insulated warmth inside.