Grow-With-Me Fly WrapsStomp Stoppers protect your horse from biting flies and insects. They also help reduce stomping, which can cause loose and lost shoes, as well as leg injury. Sizing: For yearlings or weanlings that are still growing. These wraps have a wider hook and loop fastening system that allows the wraps to expand as your horse grows enabling you to get longer use out of your wraps. Features: Breathable Comfortable Fit 4" industrial strength hook and loop