Columbia Women's Loveland Omni-Heat Snow Boot 100% Textile and synthetic Imported Synthetic sole Shaft measures approximately 13" from arch Techlite lightweight midsole for long lasting comfort, superior cushioning, and high energy return. Omni-Grip non-marking traction rubber. Waterproof woven synthetic textile upper and lining. Textile webbing. Omni-Tech waterproof breathable seam-sealed membrane bootie construction. 200g insulation. Rated -25F/-32C. Omni-Heat reflective lining.