Servus By Honeywell PRO Men's Safety Knee boots feature dual compound outsole and plain toe. Gray/red/black PVC knee boots with 15" height feature extended ribbed steel shank to PRO ide optimum support. Boots featuring TDT (Triple Density Technology) are 3-stage injection-molded for enhanced chemical resistance. The TDT outsole compounds PRO ide longer, comfortable wear while increasing slip resistance and help reduce inventory costs. It also comes with removable and washable ergonomic insoles for imPRO ed comfort. 100% WaterPRO f seamless boots are ideal for use in meat, petrochemical and petroleum PRO essing industries. It meets ASTM F2413-11 M I/75 C/75 standards.