Bogs Women's Classic Mid Handles Waterproof Boot 100% Rubber Imported Rubber sole Shaft measures approximately 8.25" from arch Heel measures approximately 0.5" Boot opening measures approximately 13" around 100% waterproof winter rain and snow boot Durable hand-lasted rubber over a four-way stretch inner bootie Lined with Bogs Max-Wick to keep feet dry Countoured EVA footbed with DuraFresh bio-technology that activates to fight odors Comfort rated to -40F / -40C