Our one is a Camp-o-matic
but about 30 years older than the one in the pictures. Scroll down to the 7th pic to see inside - the mattress/bed is on the base of the trailer and the floor just folds over, dragging the canvas over to make a high roof. It can be put up or folded away by one strong male or two not-so-strong females but the canvas does get old and rotten after time.
It has served us well for many years and many Folk Festivals but it's getting past it now (and so are we).
Anyone want to buy a Campomatic with holes? It's in NZ - too far for you to collect it!
Robyn