Specification: The World's most-used polyurethane foam earplugs, bell shape delivers maximum in-ear comfort, contoured design easier to insert, resists tendency to back-out of ear canal, polyurethane foam enhances comfort, especially for long-term wear, smooth, soil-resistant closed cell-foam skin prevents dirt build-up, bulk refills for Leight® source 400 and Leight® source 500 earplugs dispensers save time, waste and space..
