Description Made of high-class materials, durable and can be used for a long time. Aperture glasses are glasses with a series of pinhole-sized perforations that allow only a very narrow beam to enter the eye to reduce the size of the circle of confusion on the retina and increase the depth of field. This glasses can protect your glasses and improve eyesight. Practical and durable. Features - Color: Black. - Material: Resin, PC. - Size: About 15.00x4.00x3.00cm/5.89x1.57x1.18inch. -Made of high-class materials, durable and can be used for a long time. -Full-hole glasses are specially designed to improve vision. Through the small holes on the glasses, the light is dispersed, the focus is improved, and the vision is corrected. -Wearing it regularly can effectively improve vision and eliminate the stress and tension caused by glasses. -Small size, light weight, convenient to carry and store, and will not take up too much space. -The workmanship of this product is perfect, and you will have a good experience in using it.Package list: 4 x vision correction glasses