Product Specification * Material: Soft Silicone * Color: Black/ Transparent * Size: 0.40.40.3 inches * Weight: 0.9g/Pair * Applicable People: Adults and Child Product Feature * Protect Your Ears From Pain - Some people will hurt their ears because they need to wear masks for a long time at work, or because their ears are too soft to support the mask. But with this Eyeglass Hooks for Mask, you can free your ears from pain and get a good sense of comfort in wearing a mask. * The Position Can Be Adjusted - This Eyeglass Hooks for Mask is installed on the leg of the glasses and can be adjusted according to the size of your face. The large face can move it forward and the small face can move it backward. Adjust to the position where you feel most comfortable to wear the mask, so you don't have to worry about the mask being inappropriate. * Silicone Material, Soft & Durable - The smallest temple that can be used with this hook is: 0.12 inch. The largest temple that can be used is: 0.4 inch. Because silicone is elastic, it can be used on the legs of eyeglasses that are larger than the hook itself. Not only a variety of glasses can be used, but also very durable. How to Install (For reference only) If they are difficult to put on to your glasses, please heat for 30 seconds with hot water to loosen. You can also use some lubricant like hand cream to apply on your glasses frame arms. It can help you put on the silicone retainers to your glasses easier.