These Servus pro safety hi boot are expertly engineered for durability and comfort, Servus PRO is specially formulated to withstand deterioration. Developed with TDT, Servus PRO (PROcessing) footwear withstands the organic chemical deterioration common in meat processing and petrochemical industries. Seamless, waterproof comfort with 3-stage molded construction. Outsole compounds formulated for long wear and slip resistance. Removable and washable ergonomic insoles. Extended ribbed steel shank for support. Yellow midsole trimline indicates steel toe. Graduated heights decrease calf chaffing.