100% waterproof, ozone resistant red rubber. Steel toe meets or exceeds ANSI Z41 PT99 M I/75 C/75 EH. Polymeric foam insulation for warmth and thick 9 mm wool/felt midsole. Ankle fit design to keep boots on in mud and wet terrain. Rigid, contoured heel counter prevents heel slippage for walking comfort. Trac-lite outsole for grip on wet and slippery surfaces. Nylon net lining for easy on and off and removable EVA insole for cushion comfort. Also has steel shank for firm arch support and rubber protective toe cap. 3 eyelet top lace.