All-over oil-resistant rubber upper. Removable Comfort Orthotic Insert. Tempered Steel Shank. Flexible internal metatarsal guard meets the ASTM standards. Non-Removable Stainless Steel Puncture Resistant Full Sole Plate. Foot Insulated with 400 Grams of Thinsulate Ultra Insulation. Waterproof , Vulcanized Construction. Oil Resistant Rubber Outsole with Heel Kick Plate. Steel Toe, Electrical Hazard.