These 3M uncorded earplugs are made from a soft energy absorbing polymer foam which mould to the shap of your ear canal, thus providing a comfortable fit for increased wearability. Moisture resistant & non-slip, they are ideally suited for use in hot & humid conditions & can be cleaned up to 3 times. Conforming to EN352-2:1993, this pack contains 5 sets of ear plugs. Attenuation: SNR=28d B, H=30d B, M=24d B, L=22d B Uncorded ear plugs made from soft energy absorbing polymer foam Material has a slow recovery time to help the plug mould to the shape of the ear canal The soft foam is comfortable to wear Moisture resistant & non-slip Conform to EN352-2:1993 High visibility yellow Pack of 5 Attenuation: SNR=28d B, H=30d B, M=24d B, L=22d B