These Howard Lite premium foam Earplugs are for use with LS-500 dispenser. The bell shape gives maximum in-ear comfort and makes them easier to insert, resisting the tendency to back out of the ear canal. Made from polyurethane foam which enhances comfort for long term wear. they are smooth with a soil resistant skin which prevents dirt build up. Conforming to EN352-2, these Earplugs are supplied in a pack of 50.