The Aerotech Fly Bonnet is made out of Horse Pilot's 3D Mesh which is extremely breathable and padded for your horse's comfort.  The 3D mesh is both antibacterial and breathable, and has moisture absorption properties better than pure cotton and polyester blends. This bonnet also has a truly innovative design with removable noise reducing liner in the ears. It is both a soundproof and regular ear bonnet in one!