Effective relief from the symptoms of head shaking. Improved 79% of sufferers in clinical trials. permitted by British Dressage and British Eventing. Does not interfere with breathing. Places no restriction on type of bit used. Shaped mesh that fits neatly over the horse's muzzle. Attaches easily to any noseband. Colours Black, Brown or White. Sizes Pony, Cob/Horse and X Large.