Reduces noise by approximately 40dB. By wearing these when you're concerned about surrounding sounds, such as when sleeping, working, studying, or in public transportation, they block out unpleasant noises. The earplugs come with three sizes: S, M, and L, allowing you to change to the size that best fits you. This provides an outstanding fit and complete integration with the ear, creating a quiet sleeping environment. They maintain their elasticity even after long-term use, and can be washed with water for repeated use, making them hygienic and economical. After use, wash with water, dry, and store in the dedicated case. ⋆┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈⋆ ＊Instant purchase welcome・Midnight silent purchase OK◎ ＊Please be sure to read the profile as well◎ ＊Opened for photography ▶︎ Listed as "Like New"◎ ⋆┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈⋆ #MIA～Silent & Instant Purchase OK Listing List Please understand that items are stored at home and shipped in simple packaging. ▪Please check the actual photos for the condition of the product. ▪To sell at a slightly lower price, we may compress the item slightly or remove it from its box for shipping due to shipping costs. #MIA～Silent & Instant Purchase OK Listing List Earplugs for sleep, complete soundproofing, good sleep, noise canceling, high performance, noise reduction value 40dB, good sleep, noise reduction measures, relaxation, airplane, study, washable 39-33 01