Features: Safe to use: The hearing aid dome is made of a soft material, so if the dome comes off in the ear canal, it will not cause any harm. Due to frequent wear, the hearing aid ear domes should be replaced every 1 months. If the domes become stiff, the hearing amplifier's sound will be affected. Useful accessories: The hearing sound amplifiers accessories in standard size that fits most users, either left or right ear. The hearing aid tips domes fill the full ear canal, without leaking the sound, and reducing the noise. Specifications: Material: silicone, ABS and nylon Color: as picture shows Package includes: 48 x Hearing aid domes 6 x Cleaning brushes 1 x Microfiber cloth 1 x Velvet bag Warm prompt: Use the brush to clean the earwax filter frequently and recommend that you should change these filters regularly. Do not push the hearing aid dome into the ear canal. If you have any doubts about how to proceed if the hearing aid dome comes off, contact your hearing care professional.