DOT Radon Safety Shoe. The Radon is the Ultimate Multi-Purpose Utility shoe with a dual density sole, offering increased comfort and all-round protection. CE EN ISO 20345 Approved. Oil Resistant. Lightweight and flexible Dual Density PU Sole. Steel Toe Cap with Impact Protection of 200 joules. Heat Resistant To 90 Degrees Celsius. Stylish Design. Slip Resistant. Genuine Split Buffalo Leather Upper. Shock Absorption Heel. Removal Comfort Inner Soles. Wider Cut for Added Comfort. Available in Sizes 3-13.