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  • Big Agnes Greystone 20 Sleeping Bag
  • Big Agnes Greystone 20 Sleeping Bag
  • Big Agnes Greystone 20 Sleeping Bag

Big Agnes Greystone 20 Sleeping Bag

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The Big Agnes Greystone 20 sleeping bag is a traditional down-filled mummy bag that is ideal for backpacking and versatile enough for couch surfing.

In stock


Big Agnes' Greystone 20° mummy-style sleeping bag delivers value and performance in a lightweight bag with sustainability in mind. Ideal for backpacking but versatile enough for couch surfing, the Greystone sleeping bags feature 600 fill DownTek™ insulation, recycled shell and lining fabrics, and a PFAS-free coating to repel moisture. This bag is your ticket to getting out there in comfort and warmth!


  • All-Gender Greystone bags deliver technical, lightweight performance to excel on and off the trail with high thermal value, compressibility, and comfort wherever you go

  • PFAS-free water repellent coating keeps you dry without the use of harmful chemicals

  • Traditional mummy shape allows for light weight and increased body heat retention

  • Contoured hood follows the shape of your head for a more comfortable fit

  • Oversized no-draft collar and no-draft zipper to keep the cold out

  • Low-profile cordlock lets you uncinch the hood with one hand

  • Insulated tube along upper hood opening seals out drafts when cinched

  • 65"/165cm YKK #5 anti - snag locking zipper for a smooth, quick zip

  • Two-way zipper and Zipper Garage positioned on sleeper's left side of bag

  • Mate together left (All-Gender) and right (Women's) zip bags to share warmth with your tent mate

  • Interior loops secure a liner for added warmth - liner sold separately


  • Total Weight

    Regular: 2lb 4oz

    Long: 2lb 7oz

  • Fill Type

    850 Down

  • Total Fill Weight

    Regular: 19oz

    Long: 21oz

  • Compressed Bag size

    Regular: 8.5" x 8.5"

    Long: 9" x 9"

  • Stuff Sack Size

    Regular: 21L 9" x 20"

    Long: 21L 9" x 20"

  • Max User Height

    Regular: 6'

    Long: 6' 6"

  • Shoulder Girth

    Regular: 60"

    Long: 63"

  • Hip Girth

    Regular: 54"

    Long: 57"

  • Foot Girth

    Regular: 36"

    Long: 39"

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