AQWANO Guarantee - 100% Satisfaction Guaranteed. We are confident that our product will meet or exceed your expectations. If you are not satisfied with the product, however, we readily offer a 90-Day Hassle-Free Money Back Guarantee. Customer satisfaction is our priority. DIMENSION - Lens width: 50mm, Lens height: 38mm, Bridge: 17mm, Frame total: 130mm; Arm: 140mm. CLEAR AC LENS - No color difference, bring you good visual experience. Glasses lenses are high-end space AC lens with SHMC tecnology , shock resistant and water proof, dust free and easy to clean let you had clear vision. ANTI BLUE LIGHT HD LENS- AQWANO anti blue glasses can not only effectively isolate UV and radiation and can filter blue, suitable for watching TV or computer use, can greatly reduce the stimulation of blue eyes, eliminate eye soreness, fever or pain and other symptoms, relieve eye fatigue. Fashion Diamond Shape Cutting Rimless Readers -- The classic square shape frame is suitable for female with a fun and colorful design readers for a fresh look!.