Specification:The three-layer umbrella structure can attenuate the impact of sound waves on the eardrum three times, which can better fit the ear canal.Made of silicone material, small and lightweight, it is extremely soft and comfortable, which reduces the pressure of the ear canal to a greater extent.You are supposed to uses it for noise reduction when you are in sleep, factory, at home, studying, swimming, etc.Item Name: EarplugsMaterial: SiliconeFeature: Anti-noise, Soft, ComfortableSize: 1.7cm x 1.4cm x 1.4cm/0.67" x 0.55" x 0.55" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 Pair of Earplugs