to protect her hearing from the the sound of guns being repeatedly fired from her back. (she is learning to be a mounted shooting horse!) but she wont have any of it. she tosses her head and raises it so high high i get reach her ears at all. but we are making progress! this product as provided an excellent trust exercise for my horse and i. i do recommend them. it may take a little extra work to get your horse used to them, but if you are going to be shooting off its back, the horse needs hearing protection. the big advantage is the string as it prevents 