Even after long-term use, the elasticity doesn't diminish, and you can wash it with water to reuse it repeatedly, making it hygienic and economical. After use, wash with water, dry, and store in the dedicated case. ⭐Free Shipping⭐ Please check the actual product photos for the condition♡ ̖́ ︎︎☁︎︎*.┈┈┈┈┈┈┈┈┈┈┈┈︎︎☁︎︎* Before putting in earplugs, first clean your ears. First, reach the opposite hand behind your head, pull your ear up, and while holding the grip, gently push the earplug into your ear canal. That's it! ※Leaving moisture in your ears while wearing earplugs for a long time can cause otitis media, so be sure to wipe your ears thoroughly before inserting the earplugs. Earplugs for sleep, complete soundproofing, good sleep, noise canceling, high performance, noise reduction value 40dB, good sleep, noise対策, relaxation, airplane, study, washable 33-39 10 ⭐