DD is the same, she usually sleeps sideways in her cot. She's not going to fit that way for much longer though! I use a Grobag for her at night and she has the Airwrap around the cot. It's great around the three fixed sides, but I find because there is a separate piece for the drop down side it tends to fall down a bit (mostly because DD sticks her feet on top of it and pushes it down!). It is good though, and protects them somewhat from banging against the side of the cot. They also can't stand on it like they can with a bumper as it just squishes down which is good.