ALLOY TOE: Left and right asymmetrical aluminum alloy safety toes weigh 35% less than steel toes and offer a sleeker appearance: These boots meet CSA Z195 standards for electrical shock resistance and Grade 1 standards for toe protection WATERPROOF: KEEN.DRY is a waterproof, breathable membrane liner that lets vapor out without letting water in for keeping your feet dry and comfortable: The CSA San Jose 6ÔÇØ Alloy Toe work boots have a mesh liner that integrates with the waterproof membrane TRACTION: Oil- and slip-resistant, non-marking, rubber outsoles: Made with wedge tread, and siped outsole that helps provide traction on slick, flat terrain with limited debris buildup: Meets ASTM F1677 Mark II and ASTM F2913 SATRA non-slip standards SUPPORT: Made with a nylon shank, used for midfoot support and superior torsion stability, and a shellback heel support for locking your foot in place: Electrical Hazard (EH) rated to provide a secondary source of protection from live electrical circuits COMFORT & UNDERFOOT PROTECTION: Features KEEN.ReGEN technology, a lightweight, compression-resisting midsole providing 50% more energy return than standard EVA foam: Made with an ASTM/CSA certified nonmetallic puncture resistant midsole plate