These work boots meet the ASTM F2892 electrical hazard standards for soft toe footwear. A double ribbed tempered steel shank, cushioning EVA midsole and oil and slip resistant polyurethane outsole make up the foundation of the boot. It's a layer of polyurethane topped with memory foam to give you a super comfortable customizable fit. The Georgia waterproofing is designed to allow air in keeping your boots breathable while keeping water and muck from penetrating the boot.