Bogs Women's Classic Mid Corsage Boot 100% Fabric and synthetic Synthetic sole Shaft measures approximately 8" from arch Heel measures approximately 1 1/2" Platform measures approximately 1/2" Boot opening measures approximately 12" around 100% Waterproof Natural hand-lasted rubber over a four way stretch inner bootie Non-slip, non-marking and self-cleaning outsole Aegis anti-microbial odor protection insole Comfort rated from temperate to -40F or sub-zero conditions