Dielectric overboots and overshoes meet ASTM F12413-11 electrical-hazard standards to protect the wearer from electrical shock. Overboots extend higher over the foot than overshoes. Footwear Application / Electrical Shoe Style / Knee Gender / Men's Fits Shoe Size / 8 Size / 8 Footwear Sole Pattern / Anti-Skid Bars Upper Material / Rubber Midsole Material / Rubber Outsole Material / Rubber Predominant Footwear Color / Yellow Boot Height / 17 in Footwear Closure / Pull-On with Adjustable Strap Waterproof / Yes Completely Non Metallic / Yes Electrical Hazard Rated / Yes Safety Criteria / Electrical Hazard (EH), Non-Metallic, Waterproof Liner Material / Fabric Color / Yellow Style Number / 21402 Standards / ASTM F2413-05 EH, Tested to 20, 000V Using ANSI Z41 Section 5 Features / Deep Heel Cavity