50% cotton 50% polyester fabric, 100% neoprene shell, Royal Padded Hock Boots w/Hole Provide extra Padding and the Gentle Welltex Therapy for your Horse?s Hocks. Our New Royal Padded Hock Boots with Holes give you another choice for dealing with arthritic or capped hocks. Consisting of a neoprene exterior and the interior now has an extra padding that is infused with our state-of-the-art Welltex fabric containing ceramic powder which reflects your horse?s natural body warmth and creates a soothing far infrared thermal warmth. This is a well-recognized method used to help relieve and heal injured muscles, joints, and tendons. This boot fastens around the hock and the exterior still has a hole but the inside padding does not have a holes so it keeps the hock point covered. Three attached straps allow you to adjust the boots? fit. When using these boots it helps to use standing wraps to prevent them from sliding down. For STALL or Hauling ONLY! We do not recommend these boots for turn out. Sizes: 4" diameter hole in outer shell Sold as a PAIR