Big Agnes Sidney 25 Sleeping Bag - Women's

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Featuring 650-fill-power, water-resistant down, the Big Agnes Sidney 25 sleeping bag lets you customize its length and width based on temps, maximizing warmth and mobility without sacrificing weight.

  • Features

    • Exterior cinch and hook-and-loop closures let you decide the length and width based on temperature or how you sleep, maximizing warmth and mobility without sacrificing weight
    • DownTek insulation absorbs 30% less water and dries 60% faster than untreated down, and retains significantly more loft than untreated down after exposure to moisture
    • Included REM Pad Sleeve™ secures your bag to the pad so you don't roll off the pad at night; REM pad sleeve detaches and doubles as a storage sack
    • Thermally efficient vertical structured sidewalls trap heat close to your body while the contoured shape of the hood cradles your head in lofty comfort
    • Traditional mummy shape allows for light weight and increased thermal value
    • Superlight, soft-shell fabric with high tear strength and Insotect Flow construction
    • Interior zippered stash pocket
    • Vaulted footbox creates more wiggle room for your feet
    • Contoured hood baffles cradle your head for a comfortable fit
    • Low-profile cordlock lets you un-cinch the hood with only one hand
    • Oversized interior anti-draft collar
    • 70 in. (178cm) YKK #8 antisnag zipper with zipper garage
    • Interior fabric loops for sleeping bag liners; exterior loops for hang drying or storage
    • Includes a mesh storage sack and nylon stuff sack
    • Mate together left and right zip bags


    View all Big Agnes Women's Sleeping Bags
  • Technical Specs

    Best Use


    Tested Lower Limit

    10 degrees (F) - EN

    Tested Comfort

    22 degrees (F) - EN

    Temperature Rating (F)


    Temperature Rating (C)



    Ripstop nylon

    Zipper Location


    Insulation Type


    Water-Resistant Down



    650-fill-power DownTek down


    Nylon taffeta

    Sleeping Bag Shape


    Stuff Sack Size

    7.5 x 15 inches

    Stuff Sack Volume

    11 liters



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