Shires Equikind+ Hanging Cheek Peanut Link Bit Size:5.5" no heel 'dig' when driving operating Dog bed no heel 'dig' when driving operating foot controls while retaining full ankle support and close comfort fit for the lifetime of the boots The unique design of the Magnetic Hind & Hock Boots not only allows you to put magnets anywhere from the coronet band up to and including the hock joint but also ensures that your horse can comfortably wear them overnight without fear of them slipping down the leg as it is designed to distrubute pressure over both the toungue and bars of the mouth to encourage mouthing encouraging flexion in a gentle