【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 outstanding fit and complete integration with your ear, creating a quiet sleeping environment. ☘️Free Shipping & Immediate Purchase Welcome!☘️ Please check the actual product photos for the condition. (´∀｀) ※To ship at a slightly lower cost, we may remove the product from its box due to shipping costs. #yussk商品一覧 (yussk product list) is also welcome for bulk purchases❣️ 【Washable & Reusable】 The elasticity won't deteriorate even after long-term use, and you can wash them with water if they get dirty, allowing for repeated use, which is hygienic and economical. After use, wash with water, dry, and store in the dedicated case. Earplugs for Sleep, Complete Soundproofing, Sound Sleep, Noise Canceling, High Performance, Noise Reduction Value 40dB, Soundproof Measures, Relaxation, Airplane, Study, Washable 52-20-999