These are an AUS 8.5 which equals a US Men’s 9.5 or Women’s 11.5. Blundstone 783 unisex safety series steel toe work boots have the following features: • ASTM F2413-17 compliant • Made out of black premium quality leather, fully lined • Lightweight TPU sole with rubber inserts delivers excellent grip and offers great durability, as well as oil, acid, and organic fat resistance • Electrical hazard resistant soles and heels provide protection in case of electric shock • Outsoles are heat resistant up to 284°F • Steel toe cap with a wider fit for more comfortable wear • Nylon shank—ensures correct step flex point, assists with torsional stability • Ergonomically engineered toe spring for reduced wearer fatigue • Comfort Air polyurethane footbed is washable, breathable, and anti-bacterial