Weaver Leather Prodigy Sport Athletic Hind Medium Boots, 2-pack Features: Breathable foam protects legs while offering freedom of moveme Perfect choice for active, athletic horses Premium elastic binding excels at keeping out dirt and debris without cutting off circulation Engineered with a Dynamic Sling System for superior support and protection Developed in partnership with Brett Mills, inventor, horseman and founder of R.E.S. Equine Specifications: Size: Hind Medium - 11" Fetlock Circumference; 12" Boot Height