This anti-slip ear hook is made of durable PE flexible material. With adjustment buckles to adjust freely according to the size of head shape. It is suitable for various types of the mask with a two-point connection and allows you to bring health to your family and employees while reducing the pain and pressure of a long time wearing a mask in the ears. It is a wonderful giveaway for the people who need to wear masks for a long time such as medical staff, dust-workers, food-workers and so on.