This is 2 ereaders with 1 power supply and 2 protective pouches.  The PRS-300 is marketed as an ebook reader that can fit in your pocket. The above image, in fact, is almost the exact size of an actual PRS-300 (provided your browser is set to default and isn't zoomed in). It is roughly as thin as a CD case and is a lightweight 7.76 ounces (220 grams).