Columbia Women's Minx Slip On Snow Boot 100% Synthetic Rubber sole Shaft measures approximately 8" from arch Heel measures approximately 0.75" Platform measures approximately 0.5" Boot opening measures approximately 12" around Omni-Heat thermal reflective lining 200 grams of insulation High-traction rubber sole grips on all kinds of surfaces Waterproof nylon upper wit faux fur trim Waterproof breathable member provides comfort and dry environment