Gear Guy

Any advice for a good down sleeping bag?

I'm in the market for a new sleeping bag and would like to give a down bag a try, mostly because of space and weight issues. I'd be using it primarily as my summer bag, so a 30-degree rating should be enough. Do you have any advice for a good down bag? Andy La Crosse, Wisconsin

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I think that down generally remains the superior sleeping bag insulation in all but the wettest conditions. It’s super-light, of course, and very compressible. But, in most cases, it’s also more durable than synthetics. And it’s more comfortable because it makes for a softer sleeping bag that drapes more snugly over your snoozing body.

There are lots of good choices, but for several years I’ve been using a Marmot Arroyo ($259; and think it as close to perfect for a summer bag. Rating is 30 degrees, and that’s pretty conservative (I’ve slept in it at the 10,000-foot level of Mount Rainier). It uses very high-quality 800-fill down. The shell is a super-light nylon that is treated with a Nikwax compound for water repellency. Weight is very reasonable at one pound, 14 ounces. All in all, a fantastic bag.

Other options include Western Mountaineering’s Ultralite, which is a touch lighter, yet also a little warmer with a 25-degree rating. Price is $290 ( Feathered Friends’ Road Runner is rated to 30 and sells for $235 ( Both these makers are down specialists and make some of the best bags on the planet. Marmot is a more broadly based maker of gear, but has always been highly regarded for the quality of its down products.

Of course, all those bags are also pretty expensive. Take a look at REI’s more reasonably priced, new Sub Kilo ($209; It’s a 20-degree bag that weighs just a touch over two pounds, which is most impressive. High-quality 700-fill down provides the loft. The extra warmth makes it very versatile, usable for fall and spring camping as well as in the summer.

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