Earplugs for sleeping, quiet, for a good night's sleep, noise reduction rating 28dB, doesn't hurt ears, silicone, alleviates hyperacusis, reduces noise, for use on airplanes, for studying, noise reduction, soft, washable. Noise Reduction (SNR): 28dB Color: Black Size: S, M, L sizes, 3 sets With storage case * ┈ ┈ ┈* ┈ ┈ ┈* ┈ ┈ ┈ * ┈ ┈ ┈ * ┈ ┈ * ★ Instant purchase OK ※ Please check the actual photos for the condition of the product. ※ Opened once for photography and inspection. Please understand. # Click here for Natsu's product list ✨ ☜ 24-11