Salewa Men's Pro Gaiter Insulated Fit Hiking Boot 100% textile Imported Synthetic sole Shaft measures approximately 10" from arch Heel measures approximately 1.25" Platform measures approximately 1.00" Multiple lasts means differentiated fit only when the foot has the space necessary is it possible to eliminate foot rubbing no rubbing no blisters 3F power unbeatable combination of flexibility ankle support and precision in fit improved with a steel wire for additional heel containment anatomically positioned Salewa flex system Vibram salewa PRO outsole 3M thinsulate 400 lining