This waterproof, Nano-Toe work boot boasts a slip and oil resistant sole. It features a memory foam insole and a composite shank so it's comfortable and supportive for a long work day on your feet. It is static dissipative and all safety features meet or exceed ASTM standards. Nano Toe - Meets or exceeds ASTM Safety Standards Slip and Oil Resistant Static Dissipative Waterproof - Sealed membrane and topical spray Memory Foam and PU insole Compression Molded EVA Midsole Composite shank Northside Trenton Mid Nano Toe Work Boot