REI Co-op Helio Sack 50 Sleeping Bag

Color:Blue Nights
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With just enough insulation for warm weather, the REI Co-op Helio Sack 50 sleeping bag is great for travel, backpacking and bike touring. Or, slip it inside another bag on cold nights.

  • Features

    • Updated for 2021 with recycled polyester shell, lining and insulation
    • Long side unzips into a quilt; short side-zip works as both a vent and an armhole
    • Relaxed mummy shape won't cramp your sleeping style
    • Differentiated drawcords (1 round, 1 flat) let you adjust the hood and neck easily in the dark
    • Durable water repellent (DWR) finish on the recycled polyester shell resists moisture and stains
    • Included stuff sack compresses for packing; mesh expansion allows for breathable storage
    • Made using bluesign®-approved materials, which conserve resources and protect the health of the environment, workers and user (you!)


    View all REI Co-op Men's Sleeping Bags
  • Technical Specs

    Best Use



    Temperature Rating (F)

    50 degrees (F)

    Temperature Rating (C)

    10 degrees (C)


    Regular: 1 lb. 10 oz.

    Long: 1 lb. 12 oz.


    Recycled polyester (bluesign® approved)

    Zipper Location


    Insulation Type



    Recycled polyester fibers (bluesign® approved)


    Recycled polyester (bluesign® approved)

    Sleeping Bag Shape


    Fits Up To (in.)

    Regular: 72 inches

    Long: 78 inches

    Shoulder Girth (in.)

    62 inches

    Hip Girth (in.)

    56 inches

    Stuff Sack Size

    7 x 8.5 inches

    Stuff Sack Volume

    3.5 liters

    Compressed Volume

    Regular: 2.1 liters

    Long: 2.3 liters




    Contains materials that meet the bluesign® criteria

    Contains recycled materials

  • Reviews
    8 reviews with an average rating of 3.8 out of 5 stars

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