Feature:1. Main Function: Medium eye mask is used for training lazy eyes, amblyopia strabismus correction, so that vision develops correctly.2. Shading Protection: For single eye care and protection, especially effective protection after surgery. Full coverage without light leakage.3. Ultra Thin: Nonwoven material, skinfriendly, breathable, won't touch your eyes, and won't scratch your glasses.4. Universal: Size 10x5cm, suitable for sunglasses and normal glasses. Attach to the left and right sides of the glasses for a firm fit.5. Easy Use: The first step is to measure the size of your glasses, choose the appropriate size, and then put the eye patches on your left or right eye.Specification:Item Type: Eye PatchMaterial: Non-woven fabricSize: Approx. 10x5cm/3.94x1.97inUses: Shading protection, no light leakage, blocking all vision of the eyes..Package List:6 xEye Patch