Adjustable Focus - These Flex Focus Adjustable Glasses allow you to easily adjust the focus Flex-focus Glasses - by turning the knob, the two sides of each lens can be slid relative to each other until the right focal length is reached. Lightweight Material - light in weight, easy to use, no burden on the bridge of the nose. Universal Design - suitable for most people, not only can be used as presbyopia glasses and reading glasses but also can be used for children to do experiments to stimulate children's desire to explore and seek knowledge. Versatile Usage - Whether you're reading, working on a computer, or enjoying outdoor activities Package include:1 x Glasses Note: 1. Due to the different monitor and lighting effect, the actual color of the item may be slightly different from the color shown on the pictures. 2. Please allow 1-3cm error due to manual measurement. (1 inch = 2.54 cm) Thanks for your support :) Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!