These are really dog boots, but customers have been using them very successfully on goats and sheep. They are made of very tough water-resistant synthetic material, with thick rubberised sole. Velcro closure. Can be removed and re-used. Treatment can be put inside. We suggest these are not left on longer than 2 or 3 days, as deterioration of the hoof could occur. Dimension is maximum hoof width for the size. Supplied each.