The Deluxe Equine Slipper aids in medicating, treating, protecting and keeping the hoof clean. Made of heavy ply cordura to allow the hoof to breathe, preventing hoof sweat while being treated. The 1/4" thick leather sole allows a comfortable fit, providing less irritation to sore or injured hooves. The Equine Slipper has an adjustable Velcro® hook-and-loop closure for maximum adjustability and a custom fit. Recommended for stall use only. What size do you need? The smallest size possible is preferable because it reduces wear on the Slipper and provides the horse with a better fit. 1. Measure the widest part of the hoof and hoof length 2. Consult sizing chart below to determine the appropriate size. Sizes: Medium: 5 3/4" (Width) x 6" (Length) Large: 6 1/2" (Width) x 6 1/4" (Length) Extra Large: 7 1/4" (Width) x 7" (Length)