Flume UL 30°

Technical, ultralight down fill traditional mummy bags designed to excel in all conditions

Technical, ultralight down fill traditional mummy bags designed to excel in all conditions

These technical ultralight bags are designed for adventures where every ounce counts, each nook and cranny in your pack is accounted for, and you depend on the performance of your sleeping bag like you would a harness, helmet, or beacon.
$449.95 to $499.95
100% Guarantee

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.
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$449.95 to $499.95

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Specs + Sizing

Bag WeightReg: 1lb 6oz / 624g / Long: 1lb 8oz / 680g
Fill WeightReg: 12oz / 340g / Long: 14oz / 397g
Compressed Bag SizeReg: 5.5in x 7in / 14 x 18cm / Long: 5.5in x 8in / 14 x 20cm
Stuff Sack SizeReg: S 7.5in x 15in / S 19 x 38cm / Long: S 7.5in x 15in / S 19 x 38cm

Features

Shape allows for light weight and increased thermal value



3-D anti-snag draft tube prevents heat loss along the zipper



Contoured hood baffles cradle the head for a more comfortable fit



Oversized interior anti-draft collar 



DownTek™ water repellent down repels water while maintaining insulating value



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



Minimal zipper cuts weight and reduces cold spots



Two-way zipper allows easy access at waist for climbing harness tie-in



Zipper Garage 



Interior fabric loops for sleeping bag liners



Streamlined exterior loops for hang drying or storage



Mesh storage sack & nylon stuff sack

Construction + Materials

Traditional mummy shape



Nylon rip-stop shell fabric with a water repellent finish 



Nylon rip-stop lining



Insotect Flow™ construction



850 fill DownTek™ water repellent down 



Body mapped baffle construction optimizes thermal efficiency



Vertically structured sidewalls integrating contoured baffles trap heat closer to the body

Ergonomic foot box construction provides more loft and warmth 



Ultralight high tenacity shell fabric



40"/102cm YKK #5 zipper 

Here’s what other people think.


What’s in a Name?

Flume Gulch, located in Moffat County, was a notoriously challenging place to pan for gold. Its close proximity to the more fruitful Castor Gulch left many miners wasting their time during the height of the Colorado gold rush. They soon wisened up and abandoned the now valley in present-day Craig, CO.