Ahnu Women's AF2421 Sugarpine Water Proof Hiking Boot 100% Textile/Leather Imported Synthetic sole Heel measures approximately 1.25" Ahnu's waterproof breathable technology Vibram non marking outsole provides grip and traction on varied surfaces Momentum hike technology with a lateral to medial thermo polyurethane heel clip for neutral positioning and stability Dual density ethylene vinyl acetate removable footbed provides extra shock absorption with heel and arch support Integrated nylon shank and arch support provide torsional rigidity and mid foot support