Provides the highest level in comfort and durability. Ergonomically designed to support the foot and prevent heel slip. Raised ribbing for forefoot protection. Quatro ComfortForm steel toecap and heel stiffener for protection and support. Cushioned rubber midsole with arch support. High abrasion, cupped rubber outsole designed to cushion and spread load. Chemical and oil resistant Torq-Tech Nitrile outsole. Quatro Comfort System innersole - Poliyou open cell foam with shock absorbing Politec pads.