Columbia Women's Bugaboot II Snow Boot 100% Leather and Synthetic Imported Rubber sole Shaft measures approximately 6.5" from arch Heel measures approximately 1" Boot opening measures approximately 7" around Omni-Grip non-marking traction rubber. Techlite lightweight midsole for long lasting comfort, superior cushioning, and high energy return. Waterproof leather upper. Injection molded shell. Waterproof seam-sealed construction. 200g insulation. Rated -25F/-32C.