REI Co-op

Magma 30

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Overall

#24 in

Outdoor Sleeping Bags

according to Reddit Icon Reddit

Sentiment score73% positive
19
2
5
Last updated: Jun 30, 2026

Reddit Reviews

Reddit IconAlaskanarrowusa
5 months ago

You want a bag that’s rated for real cold, not just “summer temps” so a bag rated around 20°F (–6°C) to 30°F (–1°C) is the practical sweet spot for those conditions. With that said, your pad is decent and pairing that with a bag that actually matches the sleeping pad’s insulation would keep you warm bottom-to-top instead of leaving a cold gap at your torso. The 75-liter pack size you have also gives you enough volume for a real backpacking-appropriate bag like either: - the REI Co-op Magma 30°F Or - Feathered Friends Flicker 20°F / Down Or - Mountain Hardwear Lamina Z-AI 20°F Which I personally think are all really good for your use case, the REI Co-op being my personal choice if I had to choose. Otherwise, try [11 Best 2-Person Tents for Camping and Backpacking](https://alaskanarrows.com/11-best-2-person-tent-camping-and-backpacking/) for other options GL

Reddit IconFinal_Razzmatazz_274
8 months ago

Did you get the new magma 15? I got each the 30 and the 15 and while I love them, I feel like there’s such a huge gap in temp conditions. The 15 I’ve slept in down to about 22 and it was WAY too warm still. If I slept in the 30 down to 22 I’d undoubtedly be cold. I just think it’s bizarre they came out with two bags that seemingly have a huge gap.

Reddit IconFun_With_Math
9 months ago

It got down to 25 while in my 35 degree comfort rated REI magma down sleeping bag. I had pad with R-value of 2.5. I wore non-cotton thermals from Walmart. I slept great. I'm also a 6' tall 185lb man that likes the cold. I think that matters. I wouldn't suggest that setup for everyone. Also, the weather had been warmer previously so the ground temp wasn't that low.

Reddit IconIhatethisapp1429
4 months ago

When did you use the magma? The completely redid it a couple years ago, its great.

4 months ago

We're all talking about the bag, different product dude. \>REI wouldn’t return it because they’re like that now You can return REI products for a year if you're a member, 90 days if you're not. Idk how you managed to not be able to return it. They have the best return policy of any of pretty much any outdoor company, I just returned an ursack after like 11 months and got a full refund

Reddit Iconlittleyellowbike
10 months ago

I have the REI Magma 30 and I've slept comfortably down to about 35° with it; I could easily take it down another 5-10° with a second lightweight blanket and good thermal long johns (my pad is a Big Agnes Rapide SL). REI has their Labor Day sale on right now so it's a great time to shop.

Reddit Iconmaxeytheman
4 months ago

I’ve enjoyed using my (updated) magma 30. I’d venture to guess it’s a 35 comfort at worst, and my unit is probably a tiny bit under filled, weighing 1oz less than stated. The exped seems a little anemic in comparison, a whole 2.6oz less fill in the same size, all while costing more

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