Belleville TR636Z CT Maintainer Hot Weather Ltwt Performance Side Zip CT Boots CT115R canvas Shaft measures approximately Mid-Calf" from arch TR-1 load bearing orthotic insole YKK coil side zipper with auto lock liner Stain resistant full grain cowhide leather and nylon upper Composite Toe meets ASTM F2412-11 and F2413-11 standards Air mesh breathable, moisture wicking lining