Ahnu Women's Tilden V Water Shoe 100% Textile Imported Rubber sole Heel measures approximately 1.5" Breathable mesh and synthetic upper 4 millimeter cross directional self cleaning lugs Dual density compression molded ethylene vinyl acetate with momentum hike technology with a lateral to medial thermo polyurethane heel clip for neutral positioning and stability Anatomically shaped ethylene vinyl acetate footbed Integrated nylon shank and arch support provide torsional rigidity and mid foot support