Function: 2 Gears adjustable anti-slip ear hook for mask, ear protector special for Reducing the pain and pressure of long time wearing a mask in the ear. Suitable Scenario: Suitable for various types of mask with two-point connection and Fit for the people who need to wear masks for a long time such as dust-workers, food-workers and so on. Adjustable in two gears: The adjustment buckle has two gears, which can be adjusted freely according to the size of your head shape and fit to most of people. Material: This ear strap hook is made of durable PP flexible material that can be repeatedly washed, safe and durable. Packing: 5 pieces per pack, which can be reused. This product allows you to bring health to your family while giving them more comfort.