Big Agnes Star Fire UL -20°F/-29°C

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. The "Fly Creek of sleeping bags," our Star Fire UL series features the ultimate 850 fill power DownTek water-repellent down, and are built with a superlight, high-tear strength shell that also protects the inside footbox. Body-mapped baffle construction optimizes thermal efficiency creating the lightest, highly compressible bag for your most remote of overnight adventures.

• Ultralight down mummy bags that feature 850 fill power 
• DownTek down and a Pertex shell to create our most compressible, technical bags
• Traditional mummy shape allows for lightweight and increased thermal value
• Body mapped baffle construction optimizes thermal efficiency
• 3-D anti-snag draft tube prevents heat loss along the zipper
• Vertically structured sidewalls integrating contoured baffles trap heat closer to the body
• Contoured hood baffles cradle the head for a more comfortable fit
• Oversized interior anti-draft collar
• Ergonomic foot-box construction provides more loft and warmth 
• Low-profile cordlock lets you un-cinch the hood with one hand
• Insulated tube along upper hood opening seals out drafts when cinched 
• Minimal zipper minimizes weight and reduces cold spots
• 40"/102cm YKK #5 anti-snag zipper for a smooth, quick zip 
• Zipper Garage
• Interior fabric loops for sleeping bag liners
• Streamlined exterior loops for hang drying or storage
• Storage sack & stuff sack included 

Dimensions

Size	Small	Regular	Long
Compressed Bag Size	20 x 23cm	22 x 24cm	20 x 25cm
Stuff Sack Size	23 x 51cm	23 x 51cm	23 x 51cm
Max User Height	165 cm	183 cm	198 cm
Foot Girth	86 cm	91 cm	97 cm
Hip Girth	137 cm	137 cm	142 cm
Shoulder Girth	137 cm	152 cm	158 cm

Weight
Small: 1.47kg
Regular: 1.56kg
Long: 1.67kg

Materials
Shell and lining: Recycled Pertex Quantum nylon ripstop 
Insulation: 850 fill DownTek
Fill Weight: 1.02kg (S), 1.08kg (R), 1.13kg (L)