The A/T 8 in. Waterproof SZ has waterproof full grain leather and nylon upper with a Tac Dry + BBP membrane to keep your feet protected and dry. The slip- and oil-resistant outsole gives you a safe and stable footing in your work environment while the All Terrain Load Assistance System (A.T.L.A.S.) technology gives you support on those long shifts when you have heavy loads to carry. On the inside, you have the support you need and comfort you want from the Ortholite footbed, Force Foam heel, and Echo Foam forefoot. A full-length YKK zipper allows easy on and off.