Effective Noise ReductionThe ear plugs noise reduction have different noise-cancelling effects in different scenes (25dB to 33dB),soften the sound source and reduce noise while preserving the sound clarity and sharpness. Ergonomic Design With their sleek and comfortable shape, these ear plugs are designed to fit perfectly into your ear canal at 360 degrees. Even if you lie on your side or turn over, the sleeping ear plugs are not easy to slip off. Breathable and comfortable, no pain to wear for a long time. Hearing ProtectionNoise reducing ear plugs soften and optimize sound sources and reduce noise. Protect your eardrum and hearing from sharp noises, perfect for when you need a good night's sleep or need to concentrate on your work. Reusable and WashableThese noise cancelling ear plugs are specially made from premium silicone materialwhich do not stick to dust and have a delicate touch, with good elasticity and memory function, and the ear plugs for sleeping noise cancelling can be pulled at will without deformation. Comfort of Different SizesThe soft silicone ear plugs are designed in three sizes, to ensure maximum comfort and suitable for all people with different ear canal sizes. Comes with a compact storage case that fits easily in your pocket or purse.