Long-life protection to keep at hand.,Especially recommended for workers exposed to high noise levels, or in dirty environments. Suitable applications are in food processing, chemicals, glass industry, paper industries. Moulded with a pocket of air, which reduces the pressure on the ear canals. The plugs are easy to insert and to clean. The 3 profiled flanges are designed to provide a soft contact ensuring a comfortable fit. Assumed protection at 8khz = 35.8dB. Supplied in box of 50 sets Reusable/Disposable = Reusable Single Number Rating SNR = 25dB Banded = No Attachment Style = Unattached Corded = No Un-Attached = Yes Material = Monoprene Number of Pairs per Package = 50 Colour = Yellow