Does anyone have some hard evidence of compression stuff sacks decreasing the loft of their sleeping bag/high loft jacket? I would love for someone to actually test the effect of using a compression stuff sack for 10 hours on measurable loft. It would be great to repeat this test for a week and see if there are cumulative effects. I would think that for most of us “weekend warriors” the bag has enough time between trips to recover. Do sacks effect synthetic insulations more or less than down? I would like to especially use a compression sack in the winter. I just want to test it on someone else’s expensive bag first ;). Scott
