These optical quality frames incorporates a four-position adjustable bridge, providing you with truly a custom fit. The reader folds effortlessly into a handsome protective aluminum case, which matches the color of your frame. This amazing reader is only 10 mm thick, less than 1/2 the size of the typical folded reader. Elegant when worn, incredibly convenient in purse or pocket. This is a classic beauty that enhances your appearance. So slim they take almost no room in pocket or purse.