Noise Reduction: 28dB Noise Reduction Rating (NRR). Effectively blocks harmful noise. Protects hearing during noisy events or provides a peaceful environment for effective sleep. High Sound Quality: Silicone earplugs maintain the sound quality of music at concerts and festivals. Attenuation of sound quality for loud music to retain the full sound spectrum. No dull blocking like foam earplugs. Wide Application: Achieve effective noise reduction with small, clear earplugs powerful enough to protect your hearing in noisy environments. Can be used as noise-canceling earplugs for sleep, travel earplugs, swimming earplugs, soft noise-reducing earplugs at work or entertainment, etc. Natural Soft Silicone Material: Corded earplugs are made of hypoallergenic silicone, non-toxic, soft, and will not harm the ear canal. Does not cause itching or allergic reactions. Four Different Colors: You can choose one to match your hair color and clothes. Four carrying cases are included to keep the plugs clean and easy to carry in your purse, backpack, or pocket. Each pair of earplugs has a separate case. Can't sleep because of noise? Are you disturbed by noise? Don't worry about your partner snoring loudly or living in a noisy area; whether you're traveling on a plane or your neighbor is having a party, these noise-canceling earplugs will dampen noise and create a peaceful environment for you. Earplug Features: Comfortable and soft. The smooth surface, as well as the unique design, allows these earplugs to fit perfectly in your ear canal, guaranteeing unparalleled comfort. Stop wasting money on cheap earplugs that are too hard, damage your ears, or are too small and constantly fall out. Noise Reduction Rating: 28 dB. Perfect for concerts and festivals, sporting event attendees, musicians and DJs, bartenders, waiters and waitresses, construction workers, swimmers, shooting, meditation and yoga, parents working from home, students who need to concentrate and study. Suitable for swimming: These silicone earplugs can prevent water from entering the ear canal, against infections due to bacteria. Cordless Earplugs It's convenient to take them everywhere. Each pair has its own independent box. Reusable and Washable. You don't need to waste money buying other earplugs. These earplugs are reusable and washable. Package Contents: 4 pairs of earplugs and 4 plastic cases. Warning: Not suitable for children under 36 months as children may risk choking. Keep out of reach of children. Adult supervision is required for children.