Men's Rocky Monocrepe ST Work Boots The 12" Rocky® MonoCrepe brings a new meaning to lightweight. Built on our proprietary lightweight oil & slip resisting Rocky® MonoCrepe outsole and our Rocky® Air-Port Lite® sponge PU footbed with memory foam, this square toe boot keeps your feet energized so you can get the job done on the ranch. Waterproof full grain leather combined with all around waterproofing by Rocky®, guarantees to keep your feet dry and protected when you need it most. Made to last with the help of a double stitch flex welt construction and a fiberglass shank for added support giving you a stable platform that helps reduce foot fatigue and discomfort. An expansion fit seam allows for easy on and off after a long day of work. This steel toe boot meets ASTM F2413 protective toe and electrical hazard standards.