Nautilus Men's 1321 Ergolite Toe Lace-Up Sneaker 100% Nylon and leather Rubber sole Ergolite construction means its wide area safety toe is thinner than traditional safety toes, with a ballistic mesh for added strength Removable anti-fatigue polyurethane sockliner and EVA midsole for maximum comfort Highly durable, slip and oil-resistant Stabilizer outsole Meets or exceeds ASTM F2413-05 Impact/Compression Specs Meets or exceeds ASTM F2413-05 Standards for SD (Static Dissipating) Footwear