Baffin Men's Snotrek Insulated Active Winter Boot 100% Synthetic Imported Synthetic sole Shaft measures approximately 6.5" from arch Heel measures approximately 1.5" Waterproof/breathable membrane Softshell upper that offers increased comfort and mobility Baffin's own b-tek insulation offers protection to negative 20 degrees fahrenheit Cold tested high traction rubber outsole with reinforced arch Anatomic dual composition anti-microbial footbed