I was just offered a twin size down comforter to use as a TQ. In fact I was offered two. Neither tell me how much down is in them but one is heavy 6 pounds heavy and is so full it won't compress much. The second one is 3 pounds 2 oz and very compressable.

My thought is to put a foot box in it and give it a try with the lighter one. My questions are: Has anyone tried this before with a comforter? If so how did it turn out? Any suggestions? My next question is based on weight is there any way for me to determine the R value?

Any other input would be apperciated.