Designed to take on extreme environments, these 400G insulated, waterproof work boots keep you comfortable in any weather. The keen.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. All Keen Utility products offer removable insoles; however replacing the insole of esd footwear could void certain safety requirements. It is recommended to use the standard insole that come with the boots. This dependable work shoe or low-cut boot is great for lighter-duty work in specifically auto-manufacturing plants or other technology jobs where the reduction of static electricity is very important. Keen Utility products use a natural, probiotic-based technology called cleansportnxt for breaking down odor in sweat; while also sourcing leather from tanneries certified by the leather working Group (lwg). the company believes in creating work boots that make work and life better. In effort to further support that mission, Keen Utility has been “putting good to work” through its non-profit partnerships within the project build program. From helping put veterans back on their feet to Supporting conversation corps work across the country.