Original sentence: A hoof boot is a device made primarily of polyurethane and is designed to cover the hooves of a horse as an alternative to, and occasionally in addition to, horseshoes.Hoof boots can also be used as a protective device when the animal has a hoof injury that requires protection of the sole of the hoof, or to aid in the application of medication.Hoof boots may also be used when transitioning a horse from shod to unshod riding, or carried during a ride in case a horse throws a shoe.There are many different designs, but all have the goal of protecting the hoof wall and sole of the horse's hoof from hard surfaces, rocks and other difficult terrain
Edited sentence: Hoof boots may also be used when transitioning a horse from shod to unshod, barefoot, riding, or carried during a ride in case a horse throws a shoe