It's the free bumper that TipB was giving away. I found a seller on eBay that sells the same product for $0.99 with free shipping! Ordered a whole bunch of colors!
http://cgi.ebay.com/TPU-Bumper-Case...70621101375?pt=PDA_Accessories#ht_2045wt_1139
I don't know why but I love this cheap piece of plastic more than the speck pixelskin hd, incipio NGP and the bumper combined! It add's 0 bulk and it's clear so you can still see the beautiful iphone antenna... lol
The one in the picture is white but reports from other people is that they send you a clear one. Don't try emailing them on eBay - every time I do I get a generic message.