Columbia Youth Minx Slip Omni-Heat Waterproof-K Snow Boot 100% Textile Imported Rubber sole Shaft measures approximately 8" from arch Boot opening measures approximately 9" 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 Omni-heat reflective lining