cr39 ophthalmic lenses 1) Diameter of 55mm, 65mm and 70mm 2) Uc,hc,hmc emi 3) Single vision, bifocal,progressive cr39 ophthalmic lensesFeatures:1) Diameter of 55mm, 65mm and 70mm2) Uncoated,hard coated, multi-coated3) Single vison,bifocal,progressivePackage:1) Standard white envelope 2) Your design with your LOGO Certificate:1) CE2) FDA cr39 ophthalmic lenses