These Honeywell 303L Bilsom foam Earplugs are soft, delivering superior, long wearing comfort and solid performance. Both smooth and soil resistant, they prevent dirt and other substances from accumulating on the skin or entering the ear canal. The Bilsom 300 Series Earplugs are ideal for workers who need to block out loud noise while giving protection and comfort. These polyurethane foam Earplugs conform to EN 352-2:2002 EN352:2020 SNR 32.