Merrell Women's Crestbound Gore-Tex Hiking Boot 100% Leather, Fabric, Synthetic Imported Synthetic sole Shaft measures approximately 6" from arch Heel measures approximately 1.25" Platform measures approximately 0.5" Trail-ready hiker in waterproof leather featuring external instep and heel stability arm connecting to metallic lacing system GORE-TEX waterproof membrane,5mm lug depth Dual-denisty EVA foam anatomical footbed with M-Select FRESH odor control treatment Molded nylon arch shank UniFly lightweight protective midsole