Overview
Premium, packable, minimalist mummy sleeping bag
Redefine backcountry comfort with the Fly Creek UL 25, the ideal ultralight bag for all your minimalist adventures.
Premium materials, like ultralight NetPlus® fabric made from recycled fishing nets and high-quality 850-fill down, along with a sleek design featuring Big Agnes Signature Diamond Quilting, produce a lighter, more packable bag. From the ergonmic footbox to the insulated draft collar, every aspect of this sleeping bag is designed to maximize thermal efficiency, without the need for extra weight and bulk. The result is a technical sleeping bag that is a backpacker’s dream, perfect for fastpacking, thru hiking, or any overnight trip in three season temperatures.
Features
Big Agnes Signature Diamond Quilting prevents down migration while using less stitching than traditional quilt lines; saving weight and providing better loft
Ultralight NetPlus® nylon ripstop made from recycled fishing nets keeps weight low using durable and sustainable fabric
Minimalist hood with low-profile cordlock keeps your head warm without restricting breathing room. – cordlock is made with renewable source materials from organic waste
Mummy fit reduces bag volume, allowing your body to heat the bag to a comfortable temperature more quickly
Insulated zipper and draft collar lock in warmth and increase thermal efficiency
Ultralight half-length center zipper keeps weight low and provides easy temperature regulation
Ergonomic footbox construction provides more loft and better fit for warmer toes on cold nights
Streamlined hood with low-profile cordlock – made with renewable materials sourced from organic waste
Includes mesh sack ideal for long term storage, and smaller stuff sack for active use
To pack down this bag to its minimum compressed size, we recommend pairing it with a Big Agnes Compression Stuff Sack or Superlight Girdle
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: Big Agnes Signature Diamond quilt-through construction
Bottom and Sides: Baffled construction
Anti-snag #3 zippers for a smooth, quick zip
Storage sack & stuff sack included
Diamond quilt-through construction on top. Baffled construction on bottom and sides.
Specs
Total Weight: 1 lb 10 oz
ISO Comfort: 35°F
ISO Limit: 25°F
Fill Type: 850 DownTek™ PFC-Free
Total Fill Weight: 17 oz
Compressed Bag Size: 8″ × 9.5″
Stuff Sack Size: 7.5″ × 15″
Max User Height: 6′
Shoulder Girth: 60″
Hip Girth: 54″
Foot Girth: 36″
Warranty
All Big Agnes products are backed by warranty against defects in material and manufacturing.
Please see our Warranty page for the details of our warranty process as well as additional information regarding the Big Agnes warranty policy.