Amazon.com | KEEN Utility Men。I bought these boots to wear at work in the arctic as the polar traction soles are one of the 2 approved soles that we’re allowed to wear without additional traction devices (ice cleats/spikes). They’re only offered in men’s sizes and they don’t really fit right for me. I missed the return window. I tried them on at home and squatted in them to get a feel for the stiffness. They are new in the box. More details: Designed to take on extreme environments, these 400G insulated, waterproof work boots keep you comfortable in any weather. The Polar traction in the outsole give you reliable stability even in variable winter conditions. Weighing 27.35 oz/ 775 g (per Boot) It is made with durable, water proof leather and is built off of keen traditional wider footwear form. Removable insoles. Composite Toe: non-metallic composite toes are 10% lighter than steel, offer an unobtrusive fit and meet/exceed ASTM F2412 and F2413 EH standards. Waterproof: breathable membrane liner that lets vapor out without letting water in; this boot does have a liner that integrates with the waterproof membrane. Traction: oil- and Slip-Resistant, Non-Marking, rubber outsoles with Polar traction micro-glass fibers technology create a \"micro cleat\" effect for increased ice traction. Insulated & non-metallic: 400G insulation; 100% non-metallic allows for easily passing through metal detectors. Electrical Hazard rated provides protection in case accidentally coming into contact with live circuits.