Yeah, I don't think I'd be comfortable with it either. It isnt a structured sleeper, so it doesn't really qualify as a separate sleeping surface. I doubt those sides would do much to prevent accidental roll-over on top of baby. Plus, if baby became pressed up against one of the sides there isn't any ventilation. The First Years sleeper we used had mesh fabric for breathability. Sorry, I don't mean to be a wet blanket but I would keep looking if I were you.
1/23/14 at 2:23pm