Earplugs that can effectively reduce, which can ensure that your hearing is not disturbed by loud noises. Earplugs can only block harmful noises to protect your hearing, But cannot suppress all sounds to 0 dB. The earplugs are made of silicone, with a small plastic box outside. It is to fit a range of ear sizes and to ensure a great and lasting seal for your specific needs, widely used for when sleeping, swimming, air travel, construction work. Logo can be imprinted on the case, perfect for promotion. Price includes to CA. Quantity over 50000 is by sea.