Intended specifically for professionals in health care, law enforcement, or for anyone that encounters pungent environments, NOSA Plugs provide the user with discrete odor protection. The plugs allow you to breathe normally through your nose, while blocking out foul odors. NOSA Plugs provide a fresh menthol scent so you can concentrate on your job and not the distracting smells. Constructed with medical grade plastic and menthol (PVC, phthalates, and latex free). Single use, up to 8 hours per day.