Noise Cancellation: These Silicone ear Plugs Allow a good night's sleep and isolate industrial sounds. Perfect for sleeping places, buildings, industrial environments or other noisy environments. .Soft silicone: is non-toxic and suitable for prolonged use. It causes no itching or pressure pain. Ideal for use during the day during festivals and long term practices. .Perfect design: These high-fidelity earplugs have an excellent structure so that earplugs can be adapted to different sized ears, ensuring effective noise reduction. .Great hearing protection for swimming: These silicone earplugs can prevent the ingress of water into the ear canal, protect the ears from bacterial attack. .Portable and practical: This earplug can be carried anywhere and saves space. .