Banded Foam Ear Bud | SNR27 Round polymer-foam Headband mounted SNR 27dB Conforms to EN352-2 CE2056 SCAN Banded Foam Ear Bud Plugs | Scappeepband This round ear plug is made from a polymer-foam and is mounted on to a headband for an enhanced and secure fit. It has an SNR of 27db reduction. This will significantly reduce the ambient noise levels surrounding the user offering additional protection. The protection level and lightweight construction makes them the ideal product to be worn for long periods of time. Recommended shelf life of 3 years.