Merrell Men's Annex Mid Gore-Tex Boot 100% Leather/textile Imported Vibram sole Shaft measures approximately 5" from arch Heel measures approximately 1.25" Waterproof oily leather and abrasion resistant textile Breathable mesh lining Bellow tongue keeps out debris Merrell air cushion in the heel absorbs shock and adds stability with an Ethylene vinyl acetate midsole for cushioning 6 millimeter drop - 11.5 millimeter front/17.5 millimeter back