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REI Co-op Helio Sack 50 Sleeping Bag

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It’s like a big puffer jacket.

It’s a perfect fit for when camping in a small tent with an insulated matt. It’s not great for just about any other environment.

I took it to white water, where we slept under the stars. Even with a unsulated matt, sweats, wool socks, my Patagonia jacket, and a beenie, I was VERY cold.

Everything below are details copied from the manufacturer for my personal reconds and care


  • Hand wash or machine wash warm.
  • Gentle cicle in front load washer only.
  • Use mild soap or detergent.
  • Do not bleach.
  • Rinse thoroughly.
  • Do not wring.
  • Air dry or tumble dry low.
  • dry low in a heavy-duty dryer.
  • do not iron.
  • do not dry clean.


  • 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!)


Technical Specs

Best Use
Temperature Rating (F)
50 degrees (F)
Temperature Rating (C)
10 degrees (C)
Recycled polyester (bluesign® approved)
Zipper Location
Insulation Type
Recycled polyester fibers (bluesign® approved)
Recycled polyester (bluesign® approved)
Sleeping Bag Shape
Shoulder Girth (in.)
62 inches
Hip Girth (in.)
56 inches
Stuff Sack Size
7 x 8.5 inches
Stuff Sack Volume
3.5 liters
Contains materials that meet the bluesign® criteria
Contains recycled materials
From a Climate Neutral Certified brand
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