Storm King 0°

Down fill Big Agnes System bags designed to excel in all conditions and provide more room than a mummy bag

Down fill Big Agnes System bags designed to excel in all conditions and provide more room than a mummy bag

Classic down series bags offer warmth, compressibility and the Big Agnes System bag design. Lightweight enough for backpacking, these bags are designed to feel more like the comforter on your own bed. They provide an overall more comfortable and cozier sleeping experience than ever before with a semi-rectangle shape and Insotect Flow™ construction that keeps the insulation next to your body for more efficient heat distribution. These bags are taller across the top so you can roll over more freely while the Free Range Hood allows you to move unrestricted while staying hooded. So comfortable you won’t want to go home.
$349.95 to $369.95
100% Guarantee


Our top priority is to provide customer service as stellar as the award-winning products we create. If one of our products does not perform to your satisfaction, contact our customer service team and we will help you find gear that fits your needs.
$349.95 to $369.95

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Specs + Sizing

Bag WeightReg: 3lb 7oz / 1.56kg / Long: 3lb 10oz / 1.19kg
Fill WeightReg: 24.5oz / 699g / Long: 26.5oz / 754g
Compressed Bag SizeReg: 7in x 9in / 18 x 23cm / Long: 7.5in x 9.5in / 19 x 24cm
Stuff Sack SizeReg: L 9in x 20in / L 23 x 51cm / Long: L 9in x 20in / L 23 x 51cm


Design improves connection between pad sleeve and bag providing a roomier sleeping space without adding bulk

Free Range Hood design gives you the freedom to lift your head while snuggled in the hood

Low profile cordlock lets you un-cinch the hood with one hand

Stretch fabric panel beneath hood creates a designated pillow pocket

DownTek™ water repellent down repels water while maintaining insulating value

Lightweight mini rip-stop micro fiber for high performance and a soft feel

Zipper Garage

Mate together left and right zip bags within same bag series

No-draft collar, No-draft wedge, No-draft zipper

Interior fabric loops for sleeping bag liners

Exterior loops for hang drying or storage

Mesh storage sack & nylon stuff sack

Construction + Materials

Polyester mini rip-stop microfiber shell fabric with a water repellent finish

Polyester Taffetta lining

Insotect Flow™ construction

650 fill DownTek™ water repellent down

70/178 cm YKK #8 zipper

Sculpted contour allows the bag to drape around you, increasing insulation performance

Tapered vaulted foot box creates wiggle room for your feet with out creating large cold air pockets

 Integrated full pad sleeve

Rectangular shaped bag

Here’s what other people think.

What’s in a Name?

Storm King Drainage is one of the classic Steamboat powder skiing stashes, but we can’t tell you where it is. When the snow melts in the spring, Storm King Creek roars down to the floor of the Yampa Valley, and provides a water playground for kayakers, fishermen and women, and paddleboarders.