These were very easy to put up, there is a clip under the middle of the bed, not entirely sure what this is for as there are no instructions. My husband is slim and found this a little uncomfortable on his hips, so we will soon invest in a SIM to use on top, I didn't have this problem as I have extra padding around my hips it was quite comfortable for me I do find the corners a bit of a pain though, I scrapped my leg a couple of times walking past it. Over all a fab product, would recommend.
Love it. I'll be sleeping well on my camping trips this year!!