This case is by far, the best case that I have found for my Nook STR.
http://www.amazon.com/Speck-Products...d_rhf_se_p_t_2
Also cheaper there than any other place that I have found it.
Here is the manufacturer's site.
https://www.speckproducts.com/ereade...ook-touch.html
It is pretty much form fitting. Every other case that I have used has made the Nook at least 2x the size that it is. This barely adds any thickness to it. I absolutely love it.