Features of the Carhartt Men's Ground Force 8 Inch Insulated Waterproof Work Boot - Composite Toe Composite safety toe. Identifies protection against impact and compression hazards with a composite (non-metallic) safety toe. Composite toes meet ASTM F2413-18 standards Electrical hazard (safety toe). Identifies secondary protection against incidental contact with electrical circuits of 18,000 volts or less under dry conditions. Safety toe EH styles meet ASTM F2413-18 EH standards Storm defender waterproof breathable protection. These shoes Are designed to be completely waterproof and to keep your feet dry in most types of wet conditions. A waterproof and breathable membrane is used to keep your feet dry but promote air flow and circulation Insulation (600gm 3M thinsulate). These shoes Are designed to keep your feet warm in most types of cold conditions. 3M thinsulate is a microfiber that insulates boots by trapping air molecules between you and the outside. 600 grams is used for very cold conditions and heavy activity levels Rubber heel bumper. The rubber heel bumper feature is designed to provide extra abrasion resistant durability Fastdry Technology lining. Fastdry lining wicks away sweat for comfort Insite Technology Footbed. Carhartt Footbed made with insite Technology is engineered to create maximum arch support to reduce foot fatigue during long days on the job Lightweight proprietary EVA Midsole provides energy recovery and absorbs foot strike impact Cement constructed with carhartt rubber Outsole