ORIGINAL: KLS
I have one but have only used it a couple times, its called a "yukon tracks" and has the five spring loaded collapsible sides/top, I didnt pay much for it(under $100) but its nice and only takes a second to set up, in fact it takes longer to get it out of the bag than it does to set it up...
I have a Yukon Tracks blind, I love it, very simple.
Had a doghouse, it was b*#%h.
xbowbarry