WATERPROOF & DURABLE made with ozone and abrasion-esistant ZXT natural rubber that stays strong in extreme cold or heat ELECTRICAL-HAZARD RATED features non conductive soles meeting ASTM EH standards for safe job site performance REINFORCED HIGH-WEAR AREAS includes internal rubber protection on heel, ankle, and dual layer toe guard for long lasting wear TRAC-LITE OUTSOLE TRACTION features vulcanized lug pattern and 90-degree heel for reliable footing in mud and snow LIGHTWEIGHT SUPPORT with fiberglass shank, canvas lining, and removable EVA insole for comfort and stability on long shifts