What about the warmth? I've thought about getting one of these, but what worries me is that it will be too hot. My problem is that I can barely fall asleep if

What about the warmth? I've thought about getting one of these, but what worries me is that it will be too hot. My problem is that I can barely fall asleep if it's too hot, but I also need to have some weight on me, so can't sleep with the blanket cover only, either. Summers are a nightmare..