Bogs Women's Classic Mid Bloom Waterproof Boot 100% Neoprene Rubber sole Shaft measures approximately 8" from arch Heel measures approximately 1 1/4" Platform measures approximately 3/4" Boot opening measures approximately 13 1/2" around Waterproof Aegis anti-microbial lining for odor protection Perforated insoles and non-slip outer soles provide superior comfort and fit Four way stretch inner bootie that doesn't need breaking in Unconditional satisfaction guarantee