For those who missed Rick’s post the other day, here’s a blog by Matt in British Columbia devoted to reducing pack weight. He sides with the pro-down faction on sleeping bags, and the most recent post has some handy suggestions:

• Treat your sleeping bag with more care than any other piece of gear. Check the manufacturer’s web site for cleaning and care instructions, and only use the highest quality cleaning products. I use Nikwax Down Wash once a year, handwashing in the bathtub with lukewarm water, then tumble drying on low until 100% dry. Your requirements may vary.
• At home, always store your sleeping bag in a large cotton bag (the good bags will come with one), hung in a ventilated closet.
• On the trail, unpack your sleeping bag as soon as you arrive at camp, and allow it to regain its loft in the sun if possible, or in your tent. Keep it away from the fire, one small hole will allow moisture to penetrate the outer layer.
• Compact with care: don’t use a compression bag.

My synthetic bag seemed a bit chillier than I’d have preferred on my last overnighter, which makes me wonder if it’s losing its loft. Maybe I’ll just camp out in nicer weather next time.