Specification:

• 340-4002 sold in 50 pairs/box, 340-4004 sold in 100 pairs/box.
• No sizing is required for these patented, pre-molded, & triple-flanged earplugs.
• They are comfortable, hygienic, and reusable.
• Each pair comes with a cord and is supplied with a storage case or a polybag.
• NNR: 25dB.