12-12-2011, 01:14 AM
Sleeping bags definitely pack out. When I was guiding, after 2-3 years, my synthetic bag would have significantly packed out. Using compression stuff sacks and spending lots of times stuffed accelerated the process. Today's synthetic fills are vastly superior. Proper storage and cleaning help a lot. For winter camping I use a 10 degree down bag as a liner for my 0 degree synthetic. Most of my winter camping involves hot springs.