Protect the Ears — Relieve the pain and pressure of your ears caused by wearing the mask for a long time. Broad Adaptability — 3 level adjustable, adapt to various kinds of masks, suit for adults kids men women. Environmentally Friendly Design — Light weight, environmentally friendly TPU flexible material, easy to clean and reuse, fits perfectly to your head, maximum comfort design, tasteless, long life. Washable and Durable Design — This ear hook is made of durable PP flexible material that can be repeatedly washed without worry about damage and degradation. Welcome to contact us by visiting our store, if you have any question just contact us via service email, we offer 7days/24hrs Customer Service.