Interesting design that you can fold to move around which makes it easier to set up the next time, this is a really great advantage.  Also have noticed that you do not seem to stub toes walking around the bed which with the older style sometimes seemed to be an issue. 
I bought a king sized and the boxsprings do not fit snug which was a disappointment as you need to space it on each side.  Would be nice if they provided spacers to make this an easier process or if they could make it so that it fit snugly without the need for spacers.