Rocky's IronClad waterproof, steel toe work boots are beautifully constructed to meet your work place and personal footwear requirements. These boots feature rugged, yet supple leather. The flexibility of the leather will help make the breaking in of these new boots effortless. The soles of the Rocky IronClad work boots are constructed with an EVA midsole that adds a lightweight quality to the heavy duty 7 layer slip and oil resistant outsole. The polyurethane foot bed insole adds another dimension of comfort to these boots. The protective steel toe construction meets ASTM F2413-05 PT Class 75 standards and they contain electrical hazard protection. This means the boots are constructed in a manner where the bottoms are insulating and do not contain nails or metal that would conduct electricity.