Sorel Women's Helen Of Tundra Boot 100% Full-grain leather Rubber sole Shaft measures approximately 13" from arch Heel measures approximately 3/4" Platform measures approximately 1/2 Boot opening measures approximately 14 1/2" around Waterproof full-grain leather upper 100g Thinsulate insulation; 3mm felt lining. Handcrafted waterproof vulcanized rubber shell The sister boot to the Joan of Arctic