Im breaking Jesse out of them this summer, basically cos i dont want to buy the next size up and hes going to go into a big bed next year. But he only wore them at night. During the day i just go in and put a blanket on him once hes asleep.. at night i cant do that all night. I think its the way to go, that way theyre half use to sleeping with out it.. as he has gone the last 3 nights without the sleeping bag and had no problems what so ever.