Soft Earplugs, Set of 5 Pairs (10 Pieces), Green Colors Lowest Price Noise Reduction Rating: 35.5~40dB Diameter: 13mm Length: 23mm ★ A set of 10 pairs (20 pieces) is 500 yen, and a set of 15 pairs (30 pieces) is 666 yen. Bulk orders are eligible for further discounts. If you are interested, please tap the seller K-TURN to select the discounted items above, or let me know in the comments. ★ Sets with other 300-yen items such as smartphone finger sleeves and conductive fiber touch pens are also available: 2 items for 500 yen, 3 items for 666 yen. If you are interested, please select the items and request a "bundle purchase request" or consult in the comments. Comfortable soft material Polyurethane Slow rebound Soundproof For studying, swimming, sleeping, construction sites, professional use, industrial use As shown in the photo, they are packaged in bags of 5 pieces each. Because of the slow rebound, please compress them and insert them into your ear. They will slowly expand and seal your ear. If you do not want your address to be known, I can change to anonymous shipping for an additional 90 yen. Please let me know in the comments. Thank you. Earplugs Household goods Daily necessities Green Green 5 pairs 10 pieces