This is a Eyeglasses, made of high-class , 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:PC -Size:14.20X11.80X4.10cm/5.58X4.64X1.61in -Durable: This Pinhole Glasses is made of PC , practical and durable, and . -Functional: The pinhole only allows a narrow beam of light to enter your eyes, improves , helps relax the eye muscles and reduces tension. -Wide Application: This Pinhole Glasses can be used in short and long distances, suitable for adults or children with , farsightedness, and astigmatism. -Ergonomically Design: This Pinhole Glasses designed with the full frame design, ergonomically, which is easy to use and wear, will not bring you any burden. -Good present: This Pinhole Glasses is functional and also decorative, you can share them with your as a present because they are useful and practical. Package list: 2 x Pinhole Glasses