Soft Earplugs, Set of 5 Pairs (10 Pieces), Green Colors Lowest Price Noise Reduction Rating: 35.5~40dB Diameter: 13mm Length: 23mm ★ 10 pairs (20 pieces) set is 500 yen, 15 pairs (30 pieces) set is 666 yen. Bulk orders are eligible for further discounts. If you are interested, please tap the seller K-TURN and select the discounted product, 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 request a combined purchase 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, 5 pieces are packed in a bag. Because of the slow rebound, please compress the earplugs and insert them into your ear. They will expand slowly 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