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Big Agnes Mystic UL 15 Sleeping Bag

sku# 188547
Big Agnes - Mystic UL 15 Sleeping Bag
Model Info
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Product Info

The Big Agnes Mystic UL 15 Sleeping Bag is one of the lightest bags offered by BA, and with a 15-degree temperature rating, it's perhaps the most versatile. This bag really hits a sweet spot with a practical and comfortable feature set. It provides excellent low-bulk warmth thanks to the 850-fill down insulation, packs up tiny, and has an integrated sleep pad to provide a comfortable night's sleep no matter how much tossing and turning you do. For long treks and fast-and-light trips, the Mystic UL is as good of a bag as you can find anywhere.

Product Details


Shell FabricNylon Rip-stop Fabric with a Durable Water Repellent (DWR) Finish

LiningNylon Taffeta


850-fill DownTek™Repels water while maintaining insulating value - bluesign® Certified PFOA and PFOS free water repellent chemistry.


Bag WeightRegular: 2lb / 907g | Long: 2lb 5oz / 1.05kg

Fill WeightRegular: 14oz / 397g | Long: 16oz / 454g

Compressed Bag SizeRegular: 6" x 7" / 15 x 18cm | Long: 7" x 8" / 18 x 20cm

Stuff Sack SizeRegular: M 8" x 17./5" / M 20 x 45cm | Long: M 8" x 17.5" / M 20 x 45 cm

Shoulder GirthRegular: 69" / 175cm | Long: 72" / 183cm

Hip GirthRegular: 60" / 152cm | Long: 63" / 160cm

Foot GirthRegular: 49" / 125cm | Long: 52" / 132cm

Pad Sleeve Fits 20 - 25" Wide Pads


Flex Pad SleeveFeatures stretch construction that accommodates multiple pad widths, and easily connects your bag to your pad.

Free Range HoodJacket-style hood opening contours to the shape of your face for a comfortable, snug fit.

Streamlined Silhouette for Increased Thermal Efficiency

Anti-snag Zipper for a Smooth, Quick Zip

Mate Together Left and Right Zip Bags

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 & Polyester Ripstop Stuff Sack

Zipper Garage


  • Insulation: Down
  • Temperature Rating: 15
  • Shape: Mummy
  • Stuff Sack Size: 8 x 17.5"
  • Warranty: Limited Lifetime
Size Long Left Regular Left
Length Long Regular
Zipper Location Left Side Left Side
Max User Height 6'6" 5'10"
Weight (lbs) 2.31 2
Weight (g) 1050 907

Other Notes

Big Agnes products can only be shipped within the United States



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