Midsole: PU (Polyurethane). Outsole: TPU. Anti-Static, Energy Absorbent Heel, Fuel Resistant, Pull Tab. Fabric Technology: Durable. Flat. Cut: Mid Cut. Design: Logo. Conforms to Safety Standard: ASTM F2413, ASTM F2892, EN ISO 20344 5.3.5, EN ISO 20345. Toe Style: Round. Fastening: Lace Up.