My girlfriend and I just got, well a couple of weeks ago really, our new tuff-luv cases. Were both very happy with them. Her's, the black one, is very soft Napa leather and mine is saddle leather. There well padded and do a good job of protecting the reader. I don't understand what the SD card holders in the covers are for since the PRS-300 do not have SD card slots. Since pictures are worth a thousand words, here you go. Be aware, they are pricey.
www.i-nique.com