Hock Boots provide gentle heat therapy for your horses hocks. Our Hock Hole Boots give you another option for dealing with arthritic or plugged bushes. Consisting of a neoprene exterior, we infuse the interior of the boot with our state-of-the-art Welltex fabric containing ceramic powder that reflects your horses natural body heat and creates far-infrared thermal warmth. This is a well recognized method used to help soothe and heal injured muscles, joints and tendons. The boot is fastened around the hock but leaves the hock point uncovered. Attached Velcro straps allow you to adjust the fit of the boots. When you wear these boots it helps to wear foot wraps to keep them from slipping down. Our Hock Hole Boots are ideal to use for injury prevention or recovery. Do not use our Hock boots without holes for the turnout. Sizes: 3¼" diameter hole How to measure: Take the circumference of the leg approximately 5" above and 6½" below the center of the hock for the top and bottom measurements. Top Size: 5" above the center of hock Bottom: 6.2" below center of hock Small 14", Medium 15.2", Large 16", 13.2", typically Arabian size horses take a small Small, Quarter Horse a Medium, and Warmbloods a Large Sold as a pair Color: Black Machine washable up to 30°F Use regular detergents that do not contain bleach or fabric softeners Line dry air dry, do not tumble dry Back on Track products are not to be compared to magnetic therapy The effectiveness of Back on Track heat therapy has been established by medical science These are foam wraps hock that easily adjust to the horses leg.Back On Track-How It Works A white ceramic powder is fused into the polyester fabric. Neither the human eye nor the hand are capable of detecting it. Since pure polyester pills easily, the fabric consists of 40% cotton and 60% polyester. The ceramic powder reflects the bodys own thermal rays, which heats the selected body part. He