Eyeglasses are not one size fits all. Without the frame choice satisfaction, and specific measurements from trained professionals prior to lens manufacturing there are no guarantees about proper vision correction. Online eyewear shoppers can't physically try frames, and there are no professionals nearby. Zip Eyewear provider are your local optical stores which have agreed to honor our frame and lens prices. They will allow online shoppers to try the frames, make necessary changes, advise with lens selections, obtain the proper measurements, and make the glasses at their locations. Not only the the online shopper will be assured that their eyeglasses are made correctly, they will also have a place to come should they have any problems with the eyewear. Best Of Both Worlds.