Durability safety and comfort... all of these factors were considered when Rocky constructed AlphaForce Zipper Composite Toe Public Service Boots. To create a durably tough exterior Rocky used full-grain leather and 1000 denier nylon (superior strength). A side zipper allows you to easily get these boots on and off. It's covered with a VELCRO strap. While you're on duty Alpha Force boots keep your feet safe. They have a composite toe that meets ASTM standards for impact and compression. The boots also meet ASTM F2413 Electrical Hazard standards. Although these Alpha Force public service boots have a tough exterior the Air-Port cushion footbed supports and cushions your feet each time you take a step. It also circulates air within these boots. The RigiTrac outsole won't leave marks and its slip-resistance helps you keep your balance while on duty. With all of these great features this Rocky Alpha Force is the right public service boot for you! Guaranteed Rocky Waterproof construction Airport Footbed Provides Support and Cushioning Oil- and slip-resistant, non-marking RigiTrac molded EVA/rubber outsole Rubber Outsole is Non-Marking Side Zipper for Easy On and Off Full-grain leather upper ASTM F2413 protective toe classification ASTM F2413 electrical hazard standard 8 Inches in height Weight: 4.7 pounds per pair for a size 10 Rocky Mens AlphaForce Zipper Composite Toe Public Service Boot FQ0006173 BLACK