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Redefine backcountry comfort with the Big Agnes Fly Creek UL 25°, the ultimate ultralight sleeping bag for all your minimalist adventures.
Redefine backcountry comfort with the Fly Creek UL 25°, the ultimate ultralight sleeping bag for all your minimalist adventures. This bag combines premium materials, including ultralight NetPlus fabric crafted from recycled fishing nets, and high-quality 850-fill down. A sleek design featuring Big Agnes's Signature Diamond Quilting results in a lighter, more packable bag. Every aspect, from the ergonomic footbox to the insulated draft collar, is engineered to maximize thermal efficiency without adding unnecessary weight or bulk. The outcome is a technical sleeping bag that's a backpacker's dream, perfectly suited for fastpacking, thru-hiking, or any overnight trip in three-season temperatures.
Big Agnes Signature Diamond Quilting effectively prevents down migration while using less stitching than traditional quilt lines, saving weight and providing superior loft.
Ultralight NetPlus nylon ripstop, made from recycled fishing nets, keeps the weight low by utilizing durable and sustainably sourced fabric.
A minimalist hood with a low-profile cordlock keeps your head warm without restricting breathing room. The cordlock is made with renewable source materials from organic waste.
The mummy fit reduces bag volume, allowing your body to heat the bag to a comfortable temperature more quickly, enhancing thermal efficiency.
An insulated zipper and draft collar work together to lock in warmth and significantly increase the bag's thermal efficiency.
An ultralight half-length center zipper keeps weight low and provides easy temperature regulation, allowing you to vent as needed.
Ergonomic footbox construction offers more loft and a better fit, ensuring warmer toes on cold nights.
Includes a mesh sack ideal for long-term storage and a smaller stuff sack for active use, promoting easy packing.
| Regular | Long | |
|---|---|---|
| SKU | BFCULR2525 | BFCULL2525 |
| Total Weight | 1lb 10oz | 1lb 12oz |
| ISO Comfort | 35°F | 35°F |
| ISO Limit | 25°F | 25°F |
| Fill Type | 850 Downtek™ PFC-Free | 850 Downtek™ PFC-Free |
| Total Fill Weight | 17oz | 19oz |
| Compressed Bag Size | 8" x 9.5" | 8" x 10" |
| Stuff Sack Size | 7.5" x 15" | 7.5" x 15" |
| Max User Height | 6' | 6'6" |
| Shoulder Girth | 60" | 63" |
| Hip Girth | 54" | - |
| Foot Girth | 36" | 39" |
| Shell/Lining | Ultralight recycled NetPlus 10D nylon ripstop with a water-repellent finish without intentionally added PFAS. Fabric made from recycled fishing nets. |
|---|---|
| Insulation | 850 fill Downtek PFC-Free maintains insulating value even while wet, using bluesign approved water-repellent chemistry without intentionally added PFAS. |
| Upper Bag Construction | Big Agnes Signature Diamond quilt-through construction |
| Bottom and Sides Construction | Baffled construction |
| Zippers | Anti-snag #3 zippers for a smooth, quick zip |
| Accessories Included | Storage sack & stuff sack included |
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