Adjustable Focus - These adjustable focus glasses allow you to easily adjust the focus by turning the knob, sliding the two sides of each lens relative to each other until the desired focal length is achieved. Flex-Focus Glasses - Designed for clear vision at varying distances. Lightweight Material - Lightweight design ensures comfort with minimal pressure on the nose bridge. Universal Design - Suitable for most adults; can be used as reading glasses or for close-up tasks. Ideal for educational purposes and basic visual experiments. Versatile Usage - Perfect for reading, computer work, and outdoor activities. Package includes: 1 x Pair of Glasses Note: 1. Due to differences in monitor displays and lighting conditions, the actual color may vary slightly from the images shown. 2. Please allow 1-3 cm variation due to manual measurement. (1 inch = 2.54 cm)