Merrell Men's Ascend Glove Gore-Tex Minimal Running Shoe 100% Fabric and Synthetic Imported Synthetic sole Heel measures approximately 1" MotionMesh construction GORE-TEX ConnectFit for waterproof breathability M-Select FRESH odor prevention 0mm Heel-to-toe drop 6mm Cush/10.5mm Stack Height TrailProtect pad in the forefoot and heel Non-marking Vibram outsole