We got a 12' tent soft floor. A good size, easy to put up/down. The size is good for us with three kids, 9,7&2. The annex has full floor and walls. Haven't used the full walls yet, only the screen walls once. When we camp it's an outdoor thing so I don't reckon the annexe walls will get used. It was purchased 2nd hand and has a few little extras. It towed ok behind my old forester, but slows it down a bit much so the big car is the choice for dragging it around.