"To keep this sort of on-topic I stopped making quilts. I now make a sleeping bag but with a non-insulated bottom. I use very light Cuben fiber for the non-insulated bottom to keep the weight as low as possible. The non-insulated bottom keeps the sides of what used to be my quilts under control and they are a lot warmer than a quilt."

Hey Bill,
So while this question is on topic but off question, as a person who made quilts and swiched to a hybid sleeping bag, what are your thoughts on summer bags? SInce warmth is not the most important factor in summer bags (versatility of temps is IMO) what technique would you use for summer.
Thanks,
Scott