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Humid conditions are no longer your enemy.

Rainy weather and high humidity, once the sworn enemy of down-filled sleeping bags, are no longer cause for concern with the Sierra Designs Zissou 23 700-Fill DriDown Sleeping Bag. The DriDown technology coats each individual fiber with a hydrophobic finish, allowing the insulation to stay 10 times drier and twice as lofty as untreated down in wet and humid conditions. So whether you're trekking in the rainy northwest or exploring dew-soaked Appalachia, the Zissou will have you sleeping comfortably all the way down to a chilly 23°F.

  • With an EN lower limit of 23°F (lower limit refers to the average man's comfort zone), this bag is best suited for camping in the spring, summer, or fall
  • 700-fill DriDown provides toasty warmth in cold and humid conditions
  • DriDown technology gives each individual feather a hydrophobic finish, which allows the down to stay dry 10 times longer than untreated down and provides twice as much loft when exposed to humid conditions
  • Snag-free zipper tracks eliminate annoying stuck zippers
  • Draft tube along the 60-inch zipper prevents warm air from escaping
  • Drawcord at the collar provides a snug-fitting hood that traps in warm air
  • Ergonomically shaped hood and footbox allow you to sleep in a natural position
  • At just over two pounds, the Zissou won't weigh you down when you're on the trail
  • Packs into an included 7 by 16 inch stuff sack

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Here's what others have to say...


Great Bag

  • Gender:Female
  • Familiarity:I've used it once or twice and have initial impressions

Seems like a great bag although i've used it only a couples times in the Eastern Sierras, mid summer. Both nights were at elevations over 10K, so it was quite windy and chilly at night. This bag kept me sufficiently warm. I would say I typically sleep on the hotter side, and in the sierras I slept with a base layer on top/bottom. It packs down to the size of a football, and was very light for the price! Great purchase for this newbie backpacker.


I love this sleeping bag!

    This bag has kept me very warm during chilly nights. It packs down to a small size, which leaves plenty of room in my pack for more hot chocolate and s'mores stuff. Also, my girlfriend appreciates the fact that the blue bag matches my Sierra Designs tent. Thanks for the quick shipments and helpful product recommendations!


    Great Bag for almost everything!

    • Familiarity:I've used it several times

    Love the Sierra Desighns Zissou Bag so much I bought one for my mom and my dad. Perfect for the PNW and most of the backpacking we all do. My dad did get a little cool during a solo hike on the PNW trail but with two people in a tent it's about perfect. Highly recommend!

    what size compression sack pairs with this?

    On REI it says a 10 liter

    Everyone has a different heat/cold tolerance, however, would this keep the average person warm enough climbing Mt. Hood, which has a 11,000 ft elevation, during the summer or fall? Or would it be better to get a warmer sleeping bag like the Zissou 12?

    I have not tried this bag but I can offer some points to consider.

    How good are your layers and will you sleep in several layers? Quality clothing can allow for a lighter sleeping bag. i.e. I would sleep in base layer, mid, and outer (but not my water/wind layer). So, I would wear synthetic upper/lower base, wool upper/lower, a light down jacket, and a quality light synthetic jacket (check Eddie Bauer) This allows for a cooler bag. Do you typically get cold or warm? Very personal, if you are typically cold you will be more so higher up. Where are you on your weight limit? This is where quality gear can save the day. However, this bag is only 2lbs 3oz at most so it shouldn't be a big factor here, but worth mentioning. I advise first you look at what you will sleep in, this can add 20 degrees or more to a sleeping bag. If you are a cold sleeper, go with the higher rating for sleeping bags. There is no right answer, there is only your answer. I advise trying in similar cold easily escapable weather BEFORE hitting the mountain. That would provide better research than the internet. Best of luck.