These 3M uncorded ear plugs are made from soft polyurethane foam with a smooth, dirt-resistant surface for user hygiene and comfort. The disposable earplugs have a tapered design, which fits most ear canals. The orange earplugs are high visibility and also hypo-allergenic. These ear plugs conform to EN352-2:2002. This pack contains 5 sets of ear plugs. Attenuation: SNR=37dB, H=37dB, M=34dB, L=31dB.