Columbia Women's Minx Mid II Omni-Heat Print Snow Boot 100% Textile Imported Synthetic sole Shaft measures approximately 10" from arch Boot opening measures approximately 14.5" around Omni-Grip non-marking traction rubber. Waterproof woven synthetic textile with faux-fur collar and tongue lining. Omni-Tech waterproof breathable seam-sealed membrane bootie construction. 200g insulation. Rated -25F/-32C. Omni-Heat reflective lining., Removable contoured PU footbed.