Columbia Women's Loveland Shorty Omni-Heat Snow Boot 100% Synthetic and Textile Imported Rubber sole Shaft measures approximately 5.75" from arch Heel measures approximately 1" Platform measures approximately 0.75 inches Boot opening measures approximately 12.75" around Techlite lightweight midsole for long lasting comfort, superior cushioning, and high energy return. Omni-Grip non-marking traction rubber. Waterproof woven synthetic textile with faux-fur collar and tongue lining. Textile webbing. Omni-Tech waterproof breathable seam-sealed membrane bootie construction. 200g insulation. Rated -25F/-32C. Omni-Heat reflective lining.