Oliver men's 45 Series Zip Up Chemical Resistant Work Boots provide an easily-accessible zip-up option to the lace-up work boots. Oliver 45 series safety footwear is constructed with liquid-resistant leather and feature non-metallic eyelets for a true non-metallic boot. Oliver's composite toe offers hi-impact protection and is 40% lighter than traditional steel toe caps for less fatigue when worn all day. Boots also feature electrical hazard rated outsole which is also chemical-resistant and resists mineral oils, acids, alkalies, animal fats and oils. Material: Leather, Rubber.