Merrell Men's Geomorph Blaze Mid Thermo Waterproof Multisport Boot 100% Leather/Synthetic Synthetic sole Shaft measures approximately 4.75" from arch Heel measures approximately 1.5" Platform measures approximately 1" 200g Merrell Opti-Warm lightweight, low-bulk, synthetic insulation keeps you warm in varying conditions EVA removable footbed treated with Aegis antimicrobial solution Vibram Geomorph Sole / TC5+Rubber 6mm Sole Lug Depth Waterproof membrane treated with Aegis antimicrobial solution provides a impermeable yet breathable barrier.