Peltor's Tri-Flange reusable earplugs feature a proven triple-flange design for a snug, custom fit. The patented flanges and flexible stem are made of a soft, non-irritating polymer to help provide protection and comfort, and the cord helps reduce the chance of loss when not in use. They are washable and reusable with a 26 dB NRR. Made in the USA. This pack contains three pair of corded earplugs with a storage case for easy reuse.