Feature:1. Washable: The earplugs are washable to ensure clean, which not only prolongs the life of the earplugs, but also reduces the possibility of allergies caused by uncleanliness, providing peace of mind every time you wear them.2. Improves Hearing: Helps to enhance hearing and effectively reduce noise interference in the surrounding environment, helping hearing impaired people to communicate clearly even in noisy environments, preventing discomfort during use and providing the greatest sound clarity and wearing experience.3. Antistatic: The domes are also anti static, effectively preventing the discomfort caused by static during wear, so users can wear them for prolonged periods of time without worrying about static, further safeguarding the health and safety of their ears.4. Compatible: Users can clean or replace the ear plugs more conveniently and quickly, and the compatibility of the ear plugs has also been improved, which can be adapted to a wide range of sound aids, further enhancing the convenience and flexibility of use.5. Reliable: Whether in daily life, work and study, or leisure and entertainment, users can enjoy a clear, comfortable and worriless listening experience, so that hearing impairment is no longer an obstacle to their enjoyment of life.Specification:Item Type: Sound Aid Close DomeMaterial: PlasticSize: Approx. 8mm / 0.31in.Package List:20 x Close Dome1 x Ventilation Rod1 x Cleaning Brush1 x Storage Box