Dry Dawgs waterproof breathable membrane. 1200 grams of Thinsulate Ultra insulation. Composite safety toe meets ASTM F2413-11 EH standards and is non-metallic, non-magnetic, and will not conduct heat, cold or electricity. Moisture wicking, anti-bacterial treated polyurethane footbed. Oil and slip resistant NRLY rubber outsole features a polyurethane midsole, and a full foot stabilizer with multi-directional lugs for superior traction.