Composite frame gradient lens non-polarized Lens width: 52 millimeters Lens height: 30 mm millimeters RIMLESS READING GLASSES-the pupil distance(PD) is 59-63mm,the deviation for pupil distance(PD) less than 2mm,the deviation for strength less than 0.02,the deviation for lenses's horizontal line less than 1mm READING GLASSES-included a microfiber cloth and hard zipper case,Acrylic Lens and Optically correct.There are no hinges at the edge of the lenses, just bent wires from the side to go to your ears.very very lightweight. QUALITY TITANIUM FRAME -FDA Registered Reading Glasses and Eyewear,Accord with ANSI Z80.3-2010,Accord with BS EN ISO 12312-1:2013 and EN14139:2010,Accord with AS/NZS 1067:2009,Top quality titanium frame LIFETIME BREAKAGE WARRANTY&30 DAY MONEY BACK GUARANTEE: In case any broken problem happens, contact the Our without hesitation to solve the problem until satisfaction. We provides lifetime after sale service for all our reading glasses. Customers can return and get refunded for any reason. You have no risk to try Show more