CEBU Men's BrdShark 10" Work Boot HIGH TECHNOLOGY DOUBLE DENSITY POLYURETHANE MAX SOLE- One of the best things about our Max sole is its combination of two types of polyurethane. While one section is designed to provide durability and is expertly located in the areas that suffer the most wear, the other section acts as a cushion for added comfort. Absorbs the impulses and shocks of machinery and other sources AIR FLOW REMOVABLE INSOLE Have stinky feet? No worries! Our removable insoles will do just fine in the washing machine and come out looking and smelling fresh. The design also allows for some air flow. RUBBER SHARK PROTECTOR IS TOUGH AND STURDY- Wrapped around the heel and toe, the Shark Protector acts as a buffer between the leather and any rough surfaces you might scrape against. You wont have to worry about kneeling down or bumping rugged terrain again because the Sharks got you covered. The Shark may double or even triple your boots life by preserving the leather. Its combination of LIGHTWEIGHT and RESISTANT build makes it ideal for work in: Service, Landscaping, Plumbing, HVAC, Bus Drivers, Mechanics, Facility Workers, Roofers, Warehouse, and much more! Although water resistant, these boots are NOT waterproof *Not designed for the most heavy-duty work like outside construction. Check out our Tractor boots for this work field. Oil, Gas, and Acid Resistant; Goodyear Welt Construction. The external part of the shoe is made up of 100% GENUINE LEATHER.