The silicone material used in this earplug is mainly used to reduce noise and waterproof function, which is suitable for swimming, learning and sleeping noise reduction. The size of this earplug is 1.2 inches x0.7 inches, using shark fin design, which can prevent falling off, comfortable and firm, very small, very convenient to carry, 160 degree ear design, sleeping will not be ear, oval 3 layers, The noise reduction effect is increased by 80%, there are 5 colors to choose from, and you can contact customer service if you need to customize the logo. 1 location includes the shipping cost to US. Orders of 8,000 pieces or greater are eligible for sea shipping. 100% guarantee for quality. Rush Service.