REI Co-op Magma 850 Down Hoodie 2.0 - Men's

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Featuring our warmest, lightest insulation and a tough Pertex® ripstop shell, the men's REI Co-op Magma 850 hoodie 2.0 is your packable companion for cold backcountry adventures.


  • 850-fill-power goose down insulation provides a high warmth-to-weight ratio and compacts so easily you can pack the hoodie into its own left-hand pocket for storage
  • Goose down boasts a durable water repellent (DWR) treatment so it repels water and dries fast to keep insulating
  • Variable baffles map insulation to the body, providing warmth where it's needed and reduced bulk where it's not
  • Pertex® Diamond Fuse fabric's diamond-shaped filaments lock together to make a very abrasion-resistant shell; durable water repellent (DWR) finish sheds light moisture
  • Down-filled hood with rear adjustment lets you fine-tune the fit
  • Shoulder seams are rolled forward to prevent chafing under pack straps
  • Tightly quilted underarm gussets reduce bulk, improve range of motion and prevent jacket from hiking at the waist
  • Elastic cuffs and drawcord hem help seal in warmth
  • Zip hand and chest pockets are positioned to be compatible with a pack's hipbelt


View the REI Co-op Magma Product LineView all REI Co-op Men's Down Jackets

Technical Specs

Best Use



Pertex mini ripstop nylon

Lining Fabric

Ripstop nylon



Insulation Type



850-fill-power goose down (bluesign® approved)



Water-Resistant Down






Back Length


Back Length (in.)

29.25 inches




13.75 ounces


Contains materials that meet the bluesign® criteria

Fair Trade Certified™ factory

From a Climate Neutral Certified brand

Size Chart

XSSMLXLXXLXXXL24 IN Waist26 IN Waist28 IN Waist30 IN Waist31 IN Waist32 IN Waist33 IN Waist34 IN Waist35 IN Waist36 IN Waist38 IN Waist40 IN Waist42 IN Waist44 IN Waist46 IN Waist48 IN Waist50 IN Waist
Chest3536 - 3839 - 4142 - 4546 - 4950 - 5354 - 57
Sleeve Length3333.53434.53535.7536.5
Waist27.528 - 3032 - 3436 - 3840 - 4244 - 4648 - 502426283031323334353638404244464850
Hip33.534.5 - 36.537.5 - 39.541 - 4344 - 46.547.5 - 50.551.5 - 54.53233.534.536.53737.538.539.540.2541434446.547.550.552.554.5

Sizing Notes

Measurements are stated in inches unless otherwise indicated.

SHORT: Some pants are available in short sizes, which generally means an inseam that is 2.5 inches shorter than regular sizes.

TALL: Some pants, shirts, jackets and parkas are available in tall sizes, which generally means an inseam that is 3 inches longer and a rise that is 1 inch longer, a shirt or jacket body that is 2 inches longer, a parka body that is 2.5 inches longer and sleeves that are 2.5 inches longer than regular sizes.

Capri or cropped pants have an intentionally shorter inseam—reference the technical specs instead of this chart.

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