The readius is a rollable-display e-book reader (the first one of its kind). When closed the size is 115x57x21mm, and when you open the display, it's 160x115x21mm.

The Readius

Polymer vision was bankcrupt, but was bought by an Asian company, that will continue development of their flexible E Ink reader.

E Ink display info: 
Rollable 16-grayscale 320x240 5" screen
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ynvisible ink kit - create your own electrochrommic printed displaysynvisible ink kit - create your own electrochrommic printed displays