1.Soft Velvet Material Glasses patches made of soft velvet material, it fits comfortably on your eyeglasses and would not to put pressure on the eyes. 2.Training The Lazy Eye Helpful for daily patching for eye condition, and great for treat lazy eye Amblyopia Strabismus.This eye patch is ideal for some people that has to patch regularly. 3.Eyeglass patches can coverage your glasses and block all of the vision of the eye, no light leakage. It also can be washable.Provide better eye correction for you. 4.Easy To Use You just need to slide the eye patch over the eyeglass bracket and wrap it around to cover the lens. 5.Package Includes 4 pieces glasses eye patches, each patches measures10x 5 cm ( L x W ), fit for left or the right of children glasses. Please check the height of your glasses before ordering.