40dB Noise Reduction: With its 3-layer structure, the can reach 40dB, twice as high as ordinary earplugs. It is an excellent choice for study, sleep, work, concert and general hearing protection in noisy environments. is ear-friendly, which can be worn when sleeping without discomfort, even for side sleepers or people who tend to turn over during sleep. Wide application: suitable for sleeping, snoring, studying, bathing, traveling , noisy events, concerts, flying discomfort, motorcycles, and more. Suitable for people of all ages to protect your hearing from loud noise, also washable and reusable. Preserves High Fidelity Audio: These earplugs do an effective job of lowering overall volume, blocking out background noise to a comfortable level while maintaining sound clarity and sharpness. Environmentally Friendly Material: The comfortable noise canceling earplugs are made of non-toxic soft silicone, which is environmentally friendly, transparent and comfortable to wear for a long time. /p>Note: Data are all measured manually, please allow for an error of 1-3cm. Due to differences in light and display, there may be a certain color difference, which is subject to the actual object received.