USA Union made steel toe waterproof steel toe boots with Vibram fire compound sole. This vibram sole was developed to meet the needs of both structural (NFPA -flame resistance) and wildland (thermal resisting) firefighting. They meet NFPA requirements for flame resistance and abrasion. This safety boot feauures an L-protection, a non metalic textile insert for safety boots made of mulitiple layers of high tenacity fibers. Tempered steel safey toe exceeds ASTM F 2413-05 M175C75 PR AND EH rated. Heat resisting KEVLAR THREAD. FULL GRAIN WATERPROOF, FLAME AND CUT RESISTING LEATHER UPPERS. Scuff resisting exclusive Vibram rubber toe and heel Fully lined with Sympatex waterproof, breathable, blood born pathegen resistant barrier. MADE IN THE USA ISO 9001 CERTIFIED SHOE CO.               The Thorogood Co is known for supplying the finest quality job fitted protective boots for over 100 years and has presented the world,s firefighters with the best boots available .