Free 2-Day Shipping on Orders Over $50*

Detail Images

  • Big Agnes - Side
  • Big Agnes - Storm King Sleeping Bag: 0 Degree Down - Blue Stripe
  • Big Agnes - Side -

Current Color

  • Big Agnes - Storm King Sleeping Bag: 0 Degree Down - Blue Stripe

Big Agnes Storm King Sleeping Bag: 0 Degree Down


Free 2-Day shipping on orders over $50*

Select a Size:

Select options
  • Select options
    • Reg/Right Zip

    Select a Color:

    Select options
  • Select options
    • Blue Stripe

    6 Reviews


    We don't use the word ingenious too often.

    As far as sleeping bags go, 3.9 pounds is pretty light, especially when you're talking about a bag that will keep you warm in the dead of winter. On top of all the warmth, the Big Agnes Storm King 0-degree Sleeping Bag has a roomy rectangular design and can even be zipped together with another rectangular Big Agnes bag. The main reason for such a light weight is the fact that Big Agnes eliminated unnecessary insulation from the bottom of the bag. When you're sleeping on top of insulation, it doesn't keep you warm because it has no loft and therefore no air (or heat) is trapped inside. Instead, Big Agnes put a Sleeping Pad sleeve in its place, so you have the trapped air in the sleeping pad keeping you warm, and at the same time your pad stays underneath you. On to top of that, Big Agnes went with a hydrophobic down fill, so the Storm King will maintain insulating properties if it should happen to get wet.

    • 0 degree temperature rating
    • 650-fill hydrophobic down insulation
    • Rectangular shape
    • Water-resistant nylon ripstop outer shell
    • Down proof nylon taffeta lining
    • Ergonomic hood
    • Draft tube and collar
    • 70-inch side zipper
    • Integrated pad sleeve
    • Nylon stuff sack and mesh storage sack included
    • Item #BAG002X

    Tech Specs

    [shell] nylon ripstop, [lining] nylon taffeta
    650-fill DownTek water repellent down
    Max User Height
    [regular] 5 ft 10 in, [long] 6 ft 6 in
    Shoulder Circumference
    [regular] 70 in, [long] 73 in
    Hip Circumference
    [regular] 65 in, [long] 68 in
    Foot Circumference
    53 in
    Draft Tube
    Pad Retainer
    Fill Weight
    [regular] 24.5 oz, [long] 26.5 oz
    0 F
    Storage Sack
    yes, mesh
    Stuff Sack
    yes, nylon
    Stuff Size
    [regular] 8 x 9 in, [long] 8 x 10 in
    Claimed Weight
    [regular] 3 lb 9 oz, [long] 3 lb 13 oz
    Recommended Use
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Great bag!

    • Familiarity: I've used it several times

    The bag itself is really awesome. Nice material and it there is a great mesh sleeve for your sleeping pad so that you don't fall off of it during the night. Unfortunately, the storage sack doesn't pack down as small as I would like.

    Nothing but ZZZZZZ's

      When hitting the hay at seven on a cold winter night you want a comfortable bag and this is it. Pair it up with a big Agnes sleep pad and your set. It snowed and rained on day two of my trip. The bag was dry for my three day trek through shining rock wilderness in pisgah forest nc. I also have the 30 degree bag. You can move around and not sleep like your in a coffin . Highly recommended

      Warm and Light - Solid Bag

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

      Upgraded to this bag from an old down bag that was still awesome, but too heavy and too constricting around my shoulders. I researched and settled on this bag for its temp rating, size and weight.

      The StormKing is a solid well rounded bag at at great price point.

      Headed out into the snowy NC mountains for a trip to test her out. The temps were in the upper teens with a couple inches of snow on the ground.

      I used the same set up I always use in cold temps: An old school original Thermarest on top of a foam Ridgerest.

      The first night I was surprised how roomy the bag was - really addressed my claustrophobic issues. I slept like a baby, which is unusual for the first night out (a flask may have helped). I didn't get cold, but I was comparing to my old bag where I was TOASTY even in sub-zero temps.

      I attribute the lack of total cozy warmth I'm used to with my old bag to the larger size of this bag - more area to heat.

      The following night was in another area, less snowy and 24 degrees. This time I used my Cocoon Coolmax liner and put my puffy into the bag to take up space and voila! Total warmth to the point I had to vent the bag a little during the night.

      So I slept like a baby again (the flask was drained the 1st night so that wasn't a factor, unfortunately).

      Overall happy with the warmth, weight and super roomies of this bag. I will just have to stuff some clothes in it to take up space that might try and leech some body heat.

      Also the sleeve for the sleeping bag contributed to my great slumber -not having to reposition my bag or fight slipping off the pad was a nice benefit.



      Warm and Light - Solid Bag

      Love This Bag!

        I have been looking for the perfect sleeping bag for a long time. I am a side sleeper and will turn from side to side throughout the night. Most bags I have used don't allow me to bend my knees while I toss and turn. This bag does. It gives me 70 inches of room in the shoulder and 65 inches in the hip area. I am 5'9" and 175lbs and it is also the perfect length for me. I debated between the Lost Ranger and the Storm King. Because I am a cold sleeper I chose the Storm King because if anything I'd rather be too warm then too cold during winter camping. I have used it only twice so far and temperatures were in the low 40s so I haven't put it to the extreme test yet. Both nights I needed to unzip the foot box to let some heat out. The ergonomic hood is also pretty amazing. Even turning side to side my head was always warm and stayed on my pillow. The draft tube and covering was very comfortable. I was surprised at how warm it was without feeling claustrophobic in the head area. It really feels like you're sleeping in a roomy warm cocoon of softness. I am also using the Q core air mattress from big Agnes and love the sleep system idea. I did not roll off my sleeping pad and it performed as advertised. My wife slept in it one night and also loved it and is requesting that I buy her a Roxy Anne ASAP. She is a warm body sleeper so I believe that will be warm enough for her. I usually do not leave reviews on products because it takes so much time to write them but I had to on this bag. I am amazed at how it improved my sleeping experience while backpacking. It isn't the lightest or smallest compressible backpacking bag out there but it is definitely worth the small extra weight for me when it comes to having a good sleep. Big Agnes hit this one out of the park. A big thanks to also. I live in Utah and could just pick it up at the warehouse and not have to wait for online shipping. No one else carries it in the store.

        Great at the Canadian Ski Marathon

        • Familiarity: I've used it several times

        I bought this bag after having a claustrophobic panic attack in a smaller mummy bag. This bag is very roomy, very warm, and a good weight. I used it at the 2 day Canadian Ski Marathon, skiing 50 miles Saturday, camping out, and skiing another 50 miles on Sunday. I was very comfortable in this bag at -5 degrees.

        I'm 6'1 tall , should I go for a "long" instead of a " regular" ...? Thank You!

        What pad sizes work with this sleeping bag?

        Pad sizes that work with each sleeping bag size:

        Regular (Sleeping Bag): 20"x72" or 51cm x 183cm

        Long (Sleeping Bag): 20"x78" or 51cm x 198cm

        Anytime you have a Big Agnes question, shoot me an email and I'll make sure to work with you 1-on-1!

        Jared D.

        Expert Gearhead


        Hello! Is the sleeping bag on sale together with a sleeping pad?