This boot features the Work Comfort Technology System with a waterproof construction and waterproof barnyard acid resistant leather. The outsole and midsoles feature injected polyurethane. Each shoe features a steel shank. Steel Toe ASTM I 75/C75. The solid brass eyelets and hooks are set with steel washers. The perfect boot for those hazardous jobs, featuring electrical hazard protection. Other features include forest green Agion antimicrobial lining, a removable John Deere air flow comfort orthotic system insert. Definitions Midsole , Outsole , Polyurethane , Eyelets , Leather , Steel Toe Fit: True to Size