DS has one with the sleeping bag attached, we got it from Toys R Us. The main reason we bought it was because it was big and we thought he would grow with it...we have some friends with little boys who are 5 and 6 and they still love to sit on their little couches.

DS is only 2 at the moment, he tends to use it folded out for somersaults and "pretending" to be asleep (he likes tucking himself in and making snoring noises) but loves to sit on his couch and look through his storybooks. We have on occasion used it for him to have a nap in (he only has a nap once every couple of weeks). I've often thought it would be useful for a sleepover at my Mum's since DS is no longer in the cot.