?HOW TO 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. ?EFFECTIVE GLASSES TRAINING ?: Our eye patch can training the lazy eye, Amblyopia, Strabismus to work properly, so that vision can develop correctly. And also use for one eye care and shield, after the surgery. ?SUPER LIGHTWEIGHT EYE PATCHES?: Our 12 pieces eye patches set can fit the most sizes of adults and kids glasses in the market. You can install these lightweight eye patches on your left or right, arbitrarily without worrying about the burden. ?UNIQUE MATERIALl?: Our eye patches is made of non-woven material, which is skin-friendly, make it easy. Suitable for sunglasses and normal glasses. No washing, will do not contact with your skin or scrath your glasses. ?PACKAGE INCLUDES?: Our eye patches contains 12 pieces glasses patch, of which there are 6 normal size ( 2.2" x 1.6" ) and 6 large size ( 2.5" x 1.9").