This is the Incipio Feather Case.
I paid $23, from DayDeal.com. You can find it on Amazon and, for a little less, on eBay. I was able to drive to DayDeal and pick it up, so I saved shipping charges, and didn't have to wait (I can be very patient, as long as I don't have to wait). DayDeal has also treated me very well in the past, so I'm happy to give them my business, even if it costs me a few bucks.
Comes in Gray, Black, Hot Pink and Blue.
If you're looking for the thinnest, lightest case other then simply putting stickers on the back of your DNA, this case is probably it.
I'm not really sure how much protection it'll provide. I do have another case, which I used when I was on a recent trip skiing, but for day to day use, I really like this case! It retains the sleek look and feel of the DNA, even retaining the curved shape of the back of the DNA. Soft touch paint provides a more firm grip in your hand, something that was lacking in the similar Nillkin case I have. I purchased the smooth Nillkin case (they do have one with dots on the back, but I didn't care for how it looks), and always felt like it was about to slip out of my fingers (came close a couple of times)... the Feather case has no such problems!
If you're looking for a case which you can drop your DNA on concrete, and not flinch, this ain't it!
If you're looking to keep your DNA slim and light, while providing some additional protection, especially from scratches to the back... you may want to give this one a look.
Soft touch paint
Displays red highlights of the DNA
Inductive charging works fine with case
Top and bottom edges partially exposed
Doesn't provide maximum protection
Power and volume buttons exposed
Back LED concealed