REI Co-op  Magma 30 Sleeping Bag

$379.00
Color: Thunder Blue
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The updated REI Co-op Magma 30 sleeping bag ensures comfort and toasty warmth without adding extra weight. An extended range of sizes delivers your best fit for better sleep—all under 2 lbs.

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Location Image of color Thunder BlueLocation Image of color Thunder BlueLocation Image of color Thunder Blue
Location Image of color Thunder Blue

Features

  • Inclusive sizing lets you find your best fit based on body shape and sleeping preferences
  • Light-but-not-tight performance fit contours to your body shape; fitted throughout to reduce weight and increase thermal efficiency
  • Recycled downproof shell, water-resistant 850-fill-power goose down and supple recycled lining combine to provide cozy warmth and a supersoft feel
  • Nonfluorinated durable water repellent (DWR) finish on the shell and lining helps moisture bead up on the surface
  • Hood has contoured shape to fit securely around your head and cinches up for maximum warmth; 2 differentiated drawcords make it easy to adjust while you're zipped in the bag
  • Variable baffle spacing locates and stabilizes the down fill, delivering thermal efficiency and reducing weight
  • Zipper path wraps around the front of your chest so you can more easily zip and unzip the bag; zipper cover and internal antisnag strip allow for frustration-free zipping
  • Trapezoidal footbox has room to move your feet while reducing excess space to increase warmth and decrease weight
  • Insulated yoke fills the neck and shoulder gap to prevent heat loss
  • Keep personal items close and easy to access in the interior stash pocket
  • Includes a stuff sack for packing and a roomy mesh sack for breathable storage
  • Hand-wash or machine wash warm, gentle cycle in front-load washer only; do not bleach; rinse thoroughly; do not wring; air dry or tumble dry low; do not iron or dry clean
  • REI is Climate Neutral Certified; as we work to actively reduce our footprint, we measure annual carbon emissions and purchase an equivalent amount of verified carbon credits
  • Contains materials that meet the bluesign® criteria

Imported.

Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Our backpacking bags are rated for temperature according to an independent testing protocol: International Organization for Standardization (ISO) 23537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.

Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. For REI Co-op brand nongendered sleeping bags, we provide an overall temperature rating that falls between the Comfort and Lower Limit ratings.
View the REI Co-op Magma Product LineView all REI Co-op Backpacking Sleeping Bags

Technical Specs

Best Use

Backpacking

Tested Lower Limit

24 degrees (F) - ISO

Tested Comfort

34 degrees (F) - ISO

Temperature Rating (F)

30 degrees (F)

Temperature Rating (C)

-9 degrees (C)

Weight

Short Narrow: 1 lb. 5.6 oz.

Short: 1 lb. 6.8 oz.

Short Wide: 1 lb. 8.4 oz.

Medium Narrow: 1 lb. 6.9 oz.

Medium: 1 lb. 8.4 oz.

Medium Wide: 1 lb. 10 oz.

Long Narrow: 1 lb. 9 oz.

Long: 1 lb. 10.1 oz.

Long Wide: 1 lb. 11.8 oz.

Shell

15-denier recycled ripstop nylon (bluesign approved)

Zipper Location

Left

Insulation Type

Down

Water-Resistant Down

Yes

Fill

850-fill-power water-resistant goose down (bluesign approved)

Fill Weight

Short Narrow: 10.8 ounces

Short: 11.5 ounces

Short Wide: 12.4 ounces

Medium Narrow: 11.9 ounces

Medium: 12.7 ounces

Medium Wide: 13.7 ounces

Long Narrow: 13.1 ounces

Long: 13.9 ounces

Long Wide: 14.7 ounces

Sleeping Capacity

1-person

Lining

15-denier recycled ripstop nylon (bluesign approved)

Sleeping Bag Shape

Mummy

Fits Up To (in.)

Short Narrow: 65 inches

Short: 65 inches

Short Wide: 65 inches

Medium Narrow: 71 inches

Medium: 71 inches

Medium Wide: 71 inches

Long Narrow: 77 inches

Long: 77 inches

Long Wide: 77 inches

Shoulder Girth (in.)

Short Narrow: 54 inches

Short: 61.5 inches

Short Wide: 69 inches

Medium Narrow: 55 inches

Medium: 62.5 inches

Medium Wide: 70 inches

Long Narrow: 56 inches

Long: 63.5 inches

Long Wide: 71 inches

Hip Girth (in.)

Short Narrow: 45.5 inches

Short: 53 inches

Short Wide: 61.5 inches

Medium Narrow: 46.5 inches

Medium: 54 inches

Medium Wide: 62.5 inches

Long Narrow: 47.5 inches

Long: 55 inches

Long Wide: 63.5 inches

Stuff Sack Size

Short Narrow: 6 x 14 inches

Short: 6 x 14 inches

Short Wide: 6 x 14 inches

Medium Narrow: 6 x 14 inches

Medium: 7 x 15 inches

Medium Wide: 7 x 15 inches

Long Narrow: 7 x 15 inches

Long: 7 x 15 inches

Long Wide: 7 x 15 inches

Stuff Sack Volume

Short Narrow: 5 liters

Short: 5 liters

Short Wide: 5 liters

Medium Narrow: 5 liters

Medium: 7.5 liters

Medium Wide: 7.5 liters

Long Narrow: 7.5 liters

Long: 7.5 liters

Long Wide: 7.5 liters

Compressed Volume

Short Narrow: 3.6 liters

Short: 3.7 liters

Short Wide: 4.2 liters

Medium Narrow: 4 liters

Medium: 4.3 liters

Medium Wide: 4.7 liters

Long Narrow: 4.2 liters

Long: 4.7 liters

Long Wide: 5.2 liters

Gender

Unisex

Sustainability

Contains recycled materials

Contains materials that meet the bluesign® criteria

From a Climate Neutral Certified brand

Size Chart

Hip Girth

The circumference at the widest point of your hips.

39-4532-3945-52
Height
4'11'-5'5''ShortShort NarrowShort Wide
5'5''-5'11''MediumMedium NarrowMedium Wide
5'11''-6'5''LongLong NarrowLong Wide

Sizing Notes

Measurements are stated in inches unless otherwise indicated. For Hip measurement, measure around your body at the widest point of your hip. If right at the edge of the measurements listed, size up or down based on your upper body size or how you prefer your sleeping bag to fit. A closer fit will provide better insulation, and a looser fit will allow for a bit more room. It’s important to not have too much room for proper insulation.

Reviews
11 reviews with an average rating of 4.2 out of 5 stars

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