Product volume: 7cm * 2cm * 7cm Material: Silicone Function: noise reduction Color: multi-color optional Specifications: 1. Immersive, in-ear noise reduction earplugs. Put it on and the noise disappears instantly 2. Rotating storage box, small and exquisite, go out to pack bags 3. Comfortable to wear, fit the ear canal does not fall off. Ergonomic design, you move at will, it does not move, sleep roll, unrestricted 4.6 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 size 5. Layer noise reduction filters the sound waves. New upgrade, 4-layer noise reduction design, noise reduction effect is more obvious Package 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) 10 * storage box