With a sound insulation value of approximately 34dB, it blocks out noise while still allowing you to hear necessary sounds. It achieves several times the sound insulation effect compared to ordinary foam earplugs. Earplugs [Recommended by Sleep Improvement Instructors] Mimizen Study Triple Sound Insulation Travel Relaxation Healing Goods Earplugs Noise Reduction Soundproof Sleep Improvement Goods Dappy (White) ♥️ Midnight, No Comments, Immediate Purchase OK ♥️ #AchaShop☆ Click here for a list of products ☜ ⋆┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈⋆ ・Unused items are also opened for photos and inspection. ・Please understand that items are stored at home and shipped in simple packaging, and then purchase. (*ˊᗜˋ) ・Please check the actual photos for the condition of the product. Due to shipping costs, we may remove the item from its box to ship it in order to offer it at a lower price. 55-16 19 ⋆┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈⋆