Description:Material: PlasticColor: BlackScope of delivery:1X pinhole glasses Vision Improvement: This pinhole glasses can protect your eyesight by reducing the radiation of TV and computer screens. It also can help to relax your eyes while you feel tired. Perfect for both adults and children. Pinholes Design: With pinhole design, the black sun glasses only allow narrow beam of light to enter your eyes, which can can help to exercise your eye muscles and relax your eyes, specially used to improve vision or eye focusing problems. Premium Material: Our pinhole glasses are made of high quality pvc material, comfortable, portable and stylish design. This pinhole glasses can be worn by anyone, whether you're short or long-sighted, suitable for both short and long-distance. Easy to Wear: Our pinhole glasses are very easy to wear, and you can wear it by yourself without the assistance of a specialized optician. Just wear this eye glasses for over 15 minutes per day,and you can activate your natural vision ability to see clearly, also reduces dependence on glasses Perfect Gift: Taking good care of the eyes and protecting eyesight are very important for everyone. There is no doubt that this pinhole glasses are perfect gifts to your family and friends.