Built for real military use, PropperA(R) Series 100 Duty Boots were built to keep you a step ahead of the action. Built atop a slip- and oil-resistant outsole with unique arch design that resists wear from fast-roping and rappelling, Series 100 Boots are no "wannabe" combat boots-they're the real tactical deal, for active duty, patrol and more. From the rough-out leather and 1,000D nylon uppers to the custom-conforming memory foam insole, these AR670-1 boots are ready to hit the ground running. Rough-out cattlehide leather & 1,000D nylon upper Triple-row reinforced stitching for durability Open cell air mesh foam provides full foot air circulation for maximum comfort Premium memory foam insole provides custom-fit comfort Breathable mesh liner for cool comfort Friction-resistant speed lacing system with 550 paracord laces Oil- and slip-resistant rubber outsole Arch design resists wearing from ladders and fast-roping NTOA member tested and approved AR670-1 approved for uniform wear