LaCrosse Men&rsquo;s Pac 16&rdquo; Steel Toe Work Boot Rubber Imported Rubber sole Shaft measures approximately 15.75" from arch Heel measures approximately 1" Platform measures approximately 0.5" Boot opening measures approximately 18.25" around Hand-laid premium ZXT Rubber for durable, waterproof protection ZXT Rubber is ozone, abrasion and tear resistant with added tensile strength Ankle Fit locks the heel in place and top strap is adjustable for a comfortable, secure fit Multilayer rubber on the toe and heel for added support and protection Abrasion resistant rubber on the toe plus a double-layer, rubbed vamp for more durability