Self-adhesive, drug-free device gently holds open horse's nasal passages to reduce airway resistance, maximize airflow, and optimize respiratory health and efficiency. Minimizes the collapse (narrowing) of the nasal passages (upper respiratory tract) so horse works less to get air & uses less energy. Horse is more relaxed, looks fresher and catches breath faster after exercise. Intended for horses during heavy exercise regardless of breed or athletic discipline. Single use strip.