Scan Tapered Foam Earplugs made from soft energy absorbing polymer foam, which compresses and then expands for a perfect fit in the ear canal with the benefit of attached cords to avoid dropping or loss and are visible in use. Reduces sound levels to the ear drum while maintaining aural contact. Easy insertion and removal. Supplied as 6 pairs, in 3 re-sealable containers each with 2 pairs of earplugs. Conforms to EN352-22002. SNR = 38dB (Single Number Rating (SNR) = the number of decibels reduced by the product).