REI Co-op

Magma 10 Sleeping Bag - Men's

Color: Dark Obsidian/Redhot

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The nitty gritty


  1. Designed with generous knee and foot space and a fitted silhouette that delivers the most efficient warmth-to-weight ratio in the REI Co-op brand sleeping bag line
  2. Downproof Pertex® shell, water-resistant 850-fill-power goose down and supple 15-denier lining combine to provide lasting coziness and a super-soft feel
  3. Trapezoidal foot box keeps feet comfy; a toe box baffle positions downward to provide warmth
  4. Variable baffle spacing locates and stabilizes down fill, delivering high thermal efficiency and reducing weight
  5. New zipper cover and internal antisnag strip combine for easy zipping; a hybrid zipper path provides easy access along shoulders and torso
  6. A contoured hood retains warmth while providing space for a low-profile pillow; two different hood drawcords allow internal adjustment to avoid heat loss
  7. Insulated yoke fills neck and shoulder gap to prevent heat loss
  8. Includes a stuff sack for packing and a roomy mesh sack for breathable storage
  9. 2017 Editors' Choice Award winner from Backpacker Magazine

Technical Specs

  1. 850-12 degrees (C)
  2. Fill850-fill goose down
  3. Shell15-denier ripstop nylon (bluesign® approved)
  4. GenderMen's
  5. Lining15-denier ripstop nylon
  6. Weight1 lb. 14 oz.,2 lbs.,1 lb. 14 oz. / 2 lbs.
  7. Best UseBackpacking
  8. Fill Power850
  9. Weight (g)850.5,907,850.5 / 907
  10. Fill Weight500 grams,540 grams,500 / 540 grams
  11. SustainabilityDown certified to the Responsible Down Standard (RDS),Contains materials that meet the bluesign® criteria,Contains materials that meet the bluesign® criteria
  12. Tested Comfort22 degrees (F) - EN
  13. Hip Girth (in.)Hip Girth (in.)
  14. Insulation TypeDown
  15. Stuff Sack Size7.5 x 15 inches
  16. Zipper LocationLeft
  17. Fits Up To (in.)72 inches,78 inches,72 / 78 inches
  18. Compressed Volume7.3 liters,7.9 liters,7.3 / 7.9 liters
  19. Sleeping Bag ShapeMummy
  20. Tested Lower Limit10 degrees (F) - EN
  21. Shoulder Girth (in.)60 inches
  22. Water-Resistant DownYes
  23. Temperature Rating (C)-12 degrees (C)
  24. Temperature Rating (F)10 degrees (F)