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Spring storms and summer river trips might be too wet for a down bag, but the 30-degree synthetic MontBell Super Spiral Burrow #3 Sleeping Bag ensures a warm night after a cold rainstorm interrupts your trip. Thanks to the quick-drying Exceloft synthetic insulation and shingle construction, even the cold, damp mornings won't chill you to the bone.

  • Rated down to 30F, this bag is best suited for most spring through fall camping and mild-to-cool nights in the mountains
  • Exceloft synthetic insulation works best in rainy, muggy or wet conditions like a river trip or rainy Appalachian excursion
  • Tough nylon outer shell withstands trail abuse and a DWR coating prevents moisture from seeping inside
  • A draft tube inside the zipper and adjustable hood seal you off from exceptionally cold air
  • Super Spiral-Stretch System uses a biased cut fabric, elastic stitch, and gathers in the quilting so the bag stretches with your movements, keeps the down close to your skin, and eliminates dead airspace
  • Auto-locking zipper doesn't move during the night and joins your bag with another MontBell bag; left and right zippers available (depending on inventory)
  • Compression stuff sack packs the bag down to its 7.5 x 14.8in size (regular)
  • Available for shipping only to US and Canadian addresses

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Here's what others have to say...


Just received bag.

    WOW! So many positives........I was back and forth between this bag and the Sierra Designs Utoia and after trying them both out, I am definitely glad that I chose the Montbell. Better stitching, zipper is much smoother, softer feel, EN tested, and it's 4-5oz. lighter!

    Weight rating seems to be accurate. Very light for a syn. bag.

    Included stuff sack has two drawstrings. 1 to close up the bag and second to condense the sack down. It's not a compression sack, but the second draw string cuts the stuff size to about 14" x 7" (not bad at all for a synthetic).

    I've only had it for a day so I can't speak to temp. rating, but I did sleep with it as a top quilt last night in bed and this bag is VERY soft and comfortable.

    I will be using this as a TQ and sleeping bag in my hammock for 3 season camping. Footbox is roomy and has enough coverage for a comfortable hammock lay.

    I am 5'9 and bought the regular. I would recommend the long for anyone taller. This is the first bag I've ever used that my feet touched the end when my head was in the hood.

    I am a wide man and bag fit me very well. I love the stretch that this bag affords.

    Hopefully I will have it in the woods in the next few weeks and can provide a field experience review.

    Just received bag.

    Update: This bag works GREAT in my hammock. The stretch really allows me to move around and maintain full coverage. I'm a large man (more round than tall) and I still have TONS of room in this bag when I need it. The stretch gives me the best of both worlds.

    I just tried this bag in several sizes of the Sea to Summit eVent compression sack and it actually fit nicely in the SMALL, 10L sack. I was able to stuff it down enough to get 4 rolls of the top closure. The small sack really gets this bag super condensed.

    I've used this bag 6 nights in the woods so far and every night I've been more pleased with the purchase.


    Not bad

      I've only used this bag a few times, but excited to use it more. I think '30 degree' rating is sort of pushing it (I spent two 40 degree nights in Big Sur and found myself shivering a points, but don't plan on using the bag in much colder situations than that. Its cool and light and packs pretty small. Color is great (was definitely a factor in my purchase), though the finish is much more fake rubber / plastic baggy than it looks in the pictures.

      I use this bag 3 seasons , its warm , light, packs small. In the summer I usually open it up and use it as a top quilt. It feels much better on the skin than most bags. Even though this is a mummy style bag, when your zipped up inside you can stretch around a lot, it expands quite a bit more than you would think. I have never had a moisture problem. No problem staying warm at 30 degrees but I sleep warm. It also performs well in a hammock zipped up (because it stretches) or as a top quilt.