Product Details + Caterpillar EDGE PROTECT CT - Work and Safety Boots Slip and Oil resistant Rubber sole Leather upper WP - Waterproof Shaft measures approximately Ankle from arch Boot opening measures approximately 6" around Multi-Contact Insole supports all three arches for comfort and stability Carbon Composite Toe 3M Thinsulate Insulation Electrical Hazard Cat Edge Protect CT, Black (P91463)