Features: 100% brand new and high quality Suitable for red-green weak group, PVC red-green lenses, red-green blindness correction (red is better) Hardened, waterproof, anti-scratch, anti-blue light blocking, UV400 blocking. Stylish matte black metal hybrid frame for outdoor and indoor use. When wearing them, other people just think of them as fashionable glasses. Wear contact lenses, our over-the-counter outdoor glasses can be worn on your contact lenses. We recommend wearing it for 1-2 hours a day, and wearing it continuously for no less than a week. This will ensure a better wearing experience and better results. Package Includes: 1 Pair Red-green Color Blindness Correction Glasses Specifications: Material:PVC Color :Matte Black Size: Approx.3.8x14x14.7cm/1.5x5.51x5.79inch note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.