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!