40dB Noise Reduction: With 3-layer structure, the can reach 40dB, twice as high as ordinary earplugs. It is a great choice for studying, sleeping, working, concert and general hearing protection in noisy environments. Sensitive Design: The earplugs are designed in fin shape to prevent falling out, and the angle of 160 degrees is friendly to the ears, 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 , loud 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 the overall volume, blocking out background noise to a comfortable level while preserving sound clarity and crispness.Environmentally friendly material: Comfortable noise canceling earplugs are made of non-toxic, environmentally friendly soft silicone, transparent and comfortable to wear for a long time.