tldr; Reddit highly recommends the REI Co-op Magma 15 for its good performance and value, especially when purchased on sale or secondhand, though it requires careful drying.
Check pricesScores based on sentiment analysis of topic-related comments
Best praise vs top criticism for REI Co-op Magma
“The last generation of the magma line was one of the most popular bags on the PCT or AT, per Halfway Anywhere surveys. They're well known, and well-liked. Great value for the money, particularly on sale.”
“I have 20-30 nights in my magma. It’s comfort rated to 40ish. I’ve had it at freezing a few times and needed to supplement with down jacket. Would not recommend it for 20 degrees, or anything below 30 for that matter. ymmv”
36 Reddit opinions analyzed • Last updated 4/5/2026