Utilizing advancements in premium comfort technology allowed us to make this protective steel toe, hot weather boot like your favorite running shoe. With an upper constructed of durable flesh-side out cattle hide leather and abrasion resistant 1000 Denier nylon, the 600 ST is not only tough but comfortable too. Belleville hot weather boots run about 1 full size larger than your running shoe size. For example, if you wear a size 10, consider wearing a size 9. VANGUARD running shoe sole construction Steel toe meets ASTM F2412-11 and F2413-11 standards for impact & compression and EH rated Specifications Height: 8" (Standard Military Height) Upper: 100% cattle hide leather & nylon fabric Midsole: Highly cushioned, shock absorbent midsole Outsole: 100% rubber VIBRAM Sierra Insole: Single density molded removable insert