REI Co-op Magma 850 Down Jacket - Men's
Meet our lightest, most technical down jacket—the men's REI Co-op Magma 850. Made with recycled nylon and high-quality goose down, it's a packable layer for backpacking and cold-weather adventures.
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- 100% recycled ripstop nylon shell and lining fabric are both treated with a nonfluorinated durable water repellent (DWR) to help moisture bead up on the surface
- 850-fill-power goose down insulation provides a high warmth-to-weight ratio that packs down easily
- Goose down also has a DWR treatment so it repels water and dries fast to keep on insulating
- Variable baffles map insulation to the body, providing more warmth where it's needed and reduced bulk where it's not
- Elastic cuffs, drawcord hem and internal neck draft tube help seal in warmth
- Center-front zipper is backed by a windflap and chin guard
- Raglan sleeves and articulated elbows for ease of movement
- Zippered chest pocket utilizes hybrid insulation with polyester (98% recycled) to help preserve your device's battery life in the cold
- 2 zippered hand pockets, including one you can stow the jacket into for easy packability
- Hanger loop
- Machine wash warm in front-loading washer, gentle cycle; use down wash product; rinse thoroughly; do not twist or wring; remove promptly; do not use bleach or fabric softeners
- Tumble dry low with 2 clean tennis balls; remove and fluff after each cycle, returning to dryer until completely dry; do not line dry
- Contains materials that meet the bluesign® criteria
- REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world
- Made in a Fair Trade Certified™ factory
Imported.
View the REI Co-op Magma Product LineView all REI Co-op Men's Down Jackets| Best Use | Multisport |
|---|---|
| Fabric | Recycled ripstop nylon (bluesign approved) |
| Lining Fabric | Recycled ripstop nylon (bluesign approved) |
| Insulated | Yes |
| Insulation Type | Down |
| Insulation | 850-fill-power goose down (bluesign approved) |
| Warmth | Warmer |
| Water-Resistant Down | Yes |
| Hood | No |
| Packable | Yes |
| Back Length | Hip-length |
| Back Length (in.) | 29.25 inches |
| Gender | Men's |
| Weight | 11 ounces |
| Sustainability | Contains materials that meet the bluesign® criteria Contains recycled materials Fair Trade Certified™ factory From a Climate Label Certified brand |
| XS | S | M | L | XL | XXL | XXXL | 24 IN Waist | 26 IN Waist | 28 IN Waist | 30 IN Waist | 31 IN Waist | 32 IN Waist | 33 IN Waist | 34 IN Waist | 35 IN Waist | 36 IN Waist | 38 IN Waist | 40 IN Waist | 42 IN Waist | 44 IN Waist | 46 IN Waist | 48 IN Waist | 50 IN Waist | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chest | 35 | 36 - 38 | 39 - 41 | 42 - 45 | 46 - 49 | 50 - 53 | 54 - 57 | |||||||||||||||||
| Sleeve Length | 32 | 32.5 | 33 | 33.5 | 34 | 34.75 | 35.5 | |||||||||||||||||
| Waist | 27.5 | 28 - 30 | 32 - 34 | 36 - 38 | 40 - 42 | 44 - 46 | 48 - 50 | 24 | 26 | 28 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 |
| Hip | 33.5 | 34.5 - 36.5 | 37.5 - 39.5 | 41 - 43 | 44 - 46.5 | 47.5 - 50.5 | 51.5 - 54.5 | 32 | 33.5 | 34.5 | 36.5 | 37 | 37.5 | 38.5 | 39.5 | 40.25 | 41 | 43 | 44 | 46.5 | 47.5 | 50.5 | 52.5 | 54.5 |
| Inseam | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
Sizing Notes
Measurements are stated in inches unless otherwise indicated. Size chart values represent body measurements, not garment measurements.
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.
Inseam is measured to the floor.
Better gear is built together
From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.
