TuffRider Ringer Bell Boots with Velcro are made with three ribs, horizontally around the base of the Boots. These thick ribs protect the rear fetlock area of the horse as the ribs increase the thickness in the bottom part of the boot , where it was always needed.These newly designed boots with concentric ribs at the bottom part are called RINGERS Boots Again, these too are made from Organic 100% Natural Rubber, with an amazing stretching capacity and are Safe for children too