Bogs Women's Rider Corsage Boot 100% Neoprene Rubber sole Shaft measures approximately 16" from arch Heel measures approximately 1" Boot opening measures approximately 14" around Waterproof Natural hand-lasted rubber with 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