【High-Performance Filter】Reduces sound by approximately 40dB. By wearing these when you're bothered by surrounding noises, such as when sleeping, working, studying, or in public transportation, you can block out unpleasant sounds. 【Achieves Sound Sleep and High Soundproofing】The earplugs come with three sizes (S, M, and L), allowing you to change to the size that best fits you. This provides an excellent fit and complete integration with the ear, creating a quiet sleeping environment. 【Washable & Reusable】They maintain their elasticity even after long-term use, and can be washed with water to be reused, making them hygienic and economical. After use, wash with water, dry, and store in the dedicated case. 【How to Wear】Before putting in the earplugs, clean your ears. First, reach the opposite hand behind your head and pull your ear upwards, then gently insert the earplug into your ear canal while holding the grip. ※ Leaving moisture in your ear for a long time while wearing earplugs can cause otitis media, so be sure to wipe your ears thoroughly before inserting the earplugs. 【Package Contents & Quality Guarantee】Earplugs x 1 set, ear tips (S/M/L) 3 sizes each 1 set, storage case x 1. Earplugs for sleep, complete soundproofing, sound sleep, noise canceling, high performance, sound insulation value 40dB, sound sleep, noise reduction measures, relaxation, airplane, study, washable Sent in simple packaging. The actual product photos are on the second image. 54-55999...