Our Slimfold Style III folding reader is a modified rectangle shape, with a larger, more rectangled lens size than Slimfold style I. It fits into the same protective case, but the lens is slightly larger (47mm vs 44mm). These are the authentic and original SlimFold reading glasses, made in Japan by Kanda of Japan. These optical quality frames incorporates a four-position adjustable bridge, providing you with truly a custom fit. 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. Style III is available in Black, Brown, Pewter or Gold to satisfy every discriminating taste. Here's the optical sizing scoop: Lens: 47mm Bridge: 21mm Temple: 135mm