Hellobee Boards

We have the Summer Infant Sure and Secure Sleeper (looks very similar to the one you posted) and it fit ok in our king sized bed. R slept decently in it, but she's such a noisy sleeper that it didn't work for me to have her that close to my head so two weeks in we've already ditched it.

@Tanjowen: we bought our rock n play two days ago and love it

@Tanjowen: We had that one and ended up returning it. DD liked to be touching me when she slept and the stiff sides on it made it awkward/uncomfortable for me to drape my arm over it. I think the firmness of the mattress could also affect how well it works because the co-sleeper is super light. When we had a less firm, more worn in mattress, and the co-sleeper was between us, it would tilt toward my husband's side when he laid down because he's a lot heavier than I am. So DD would kind of roll. We ended up just co-sleeping for a bit but if I had to do it again I'd get an arms reach co-sleeper or side car the crib.