The Gunby ST is a 6-tie, steel-toe work shoe, made with water resistant leather uppers and a padded collar and tongue. Technical and safety features: Moisture wicking lining Removable contoured cushioned insole treated with anti-bacterial Smartmask® Slip resistant sole reduces risk of falls on hazardous surfaces Additional insulation helps protect against accidental contact with an electric charge Dr. Martens air-cushioned sole is resistant to fat, petrol, alkali Standard: ASTM F2413-11 MI/75 C/75 EH