I bought this primarily for sleeping, it is fairly level unfolded, one end is slightly lower.  It is extremely stiff and I need to use foam topper, which makes it inconvenient. It also made me sneeze for the first 3 or 4 months and I am not allergic to much. It had a dusty smell. I use it to sit and read. It is a great size for small people, I'm 61.5 inches. Would be good for kids.