sleep for a 2,5yo?

so my kid's been sleeping with a blanket since a year or so.. ne sleeping bags as they make him uncomfortable and he won't sleep.

now over this last very hot summer he's gotten used to sleeping without a blanket and he just throws it off.. but autumn has set in and it's cold out.

I guess I just wanted to ask.. how do your kids sleep when they're not in a sleepsack?