Baffin Womens Ease Tall Insulated Lightweight Boot 100% Textile Imported Rubber sole Shaft measures approximately 12.5" from arch Boot opening measures approximately 14.75" around Synthetic insulation for protection to negative twenty (-20) degrees fahrenheit Waterproof breathable membrane Nylon shell with draw string snow collar Removable insole Baffin's thermaplush lining for ultimate comfort and moisture control