Product volume: 7cm * 2cm * 7cmMaterial: SiliconeFunction: noise reductionColor: multi-color optionalSpecifications:1. Immersive, in-ear noise reduction earplugs. Put it on and the noise disappears instantly2. Rotating storage box, small and exquisite, go out to pack bags3. Comfortable to wear, fit the ear canal does not fall off. Ergonomic design, you move at will, it does not move, sleep roll, unrestricted4.6 sponges to replace 1 pair of silica gel to replace 1 pair of small orange sleeve to replace can be switched according to their own ear canal size5. Layer noise reduction filters the sound waves. New upgrade, 4-layer noise reduction design, noise reduction effect is more obviousPackage Included:Earplugs * 1 to 1 * storage box (6 sponges to replace 1 pair of silica gel to replace 1 pair of small orange set to replace)