Designed with a lightweight HoverSpring foam midsole for industry-leading underfoot comfort, flexibility, and durability, our Radius men's work boots also feature an abrasion-resistant mesh upper and anatomically positioned flex grooves. Anti-Fatigue Technology polyurethane footbed for shock absorption and energy return. Cement construction for flexibility. Heat-, slip-, oil-, and abrasion-resistant, non-marking rubber outsoles Safety Rating: S1 P SRC 200J Alloy Toe Cap Composite Penetration-Resistant Midsole Standard Fit Fuel Oil-Resistant Sole Not Tested for Sole Heat Resistance Not Water-Resistant ESD Sole Shock-Absorbing Heel Reinforced Heel Safety Rating: S1 P SRC 200J Alloy Toe Cap Composite Penetration-Resistant Midsole Standard Fit Fuel Oil-Resistant Sole Not Tested for Sole Heat Resistance Not Water-Resistant ESD Sole Shock-Absorbing Heel Reinforced Heel