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REI Co-op Magma 15 Review
Looking for a lightweight yet warm sleeping bag for your backpacking adventures? In this REI Co-op Magma 15 review, we explore how this sleeping bag combines high-quality materials, thoughtful design, and affordability to meet the needs of both casual campers and serious backpackers.
The REI Co-op Magma 15 is a 3-season sleeping bag designed to provide warmth in temperatures as low as 16°F (-8.9°C). It features 850-fill-power goose down insulation, known for its excellent warmth-to-weight ratio and compressibility. The bag’s shell is made from Pertex® 15-denier ripstop nylon with a durable water-repellent (DWR) finish, offering a balance between durability and lightweight performance. Weighing approximately 2 lbs 3.6 oz (regular size), the Magma 15 is suitable for backpackers aiming to minimize pack weight without sacrificing comfort.
Key Specifications
| Weight | 2 lbs 3.6 oz (regular size) |
| Temperature Rating | 16°F (-8.9°C) |
| Insulation Type | 850-fill-power goose down (bluesign® approved) |
| Shell Material | Pertex® 15-denier ripstop nylon with DWR finish |
| Zipper Location | Left |
| Shape | Mummy |
| Shoulder Girth | 63 inches |
| Hip Girth | 57 inches |
| Stuff Sack Size | 7.5 x 15 inches |
| Stuff Sack Volume | 10.9 liters |
Comparisons
REI Co-op Magma 15 vs. Western Mountaineering UltraLite 20
The Western Mountaineering UltraLite 20 is renowned for its exceptional craftsmanship and 850+ fill power down, offering a temperature rating of 20°F. Weighing around 1 lb 13 oz, it is lighter than the REI Co-op Magma 15. However, the UltraLite 20 comes at a significantly higher price point. The Magma 15 provides similar warmth and quality at a more accessible price, making it an excellent value for budget-conscious backpackers.
REI Co-op Magma 15 vs. Therm-a-Rest Parsec 20
The Therm-a-Rest Parsec 20 features 800-fill Nikwax Hydrophobic Down™ and a temperature rating of 20°F. It weighs approximately 1 lb 15 oz, slightly lighter than the REI Co-op Magma 15. The Parsec 20 includes additional features like a removable connector system to secure a sleeping pad. While both bags offer excellent warmth and packability, the Magma 15’s higher fill power and lower temperature rating provide an edge in colder conditions.
Pros & Cons Summary
| Feature | Magma 15 | UltraLite 20 | Parsec 20 |
|---|---|---|---|
| Weight | ❌ Slightly heavier (2 lbs 3.6 oz) | ✅ Lighter (1 lb 13 oz) | ✅ Slightly lighter (1 lb 15 oz) |
| Warmth | ✅ Excellent 16°F rating | ✅ Solid 20°F rating | ✅ Good 20°F rating |
| Packability | ✅ Highly compressible | ✅ Highly compressible | ✅ Highly compressible |
| Comfort | ✅ Soft materials, ample shoulder room | ❌ Slimmer cut, may feel restrictive | ✅ Roomy fit, additional features |
| Durability | ✅ Durable shell with DWR finish | ✅ High-quality materials | ✅ Durable materials with hydrophobic down |
| Price | ✅ Affordable for its features | ❌ Higher price point | ❌ Higher price point |
| Best For | Budget-conscious backpackers seeking warmth | Ultralight enthusiasts prioritizing weight | Backpackers desiring additional features |
Looking for the right sleeping bag for your outdoor adventure? Visit our Best Sleeping Bags guide.
Frequently Asked Questions
Is the Magma 15 suitable for side sleepers?
Yes, the Magma 15’s mummy shape and ample shoulder girth accommodate various sleeping positions, including side sleeping.
Does the Magma 15 come in different sizes?
Yes, the Magma 15 is available in multiple sizes to fit different body types. It’s recommended to try the bag in-store to ensure the best fit.
Is the down insulation treated for moisture resistance?
Yes, the 850-fill-power goose down is treated to resist moisture, maintaining loft and warmth in damp conditions.
Can the Magma 15 be zipped together with another sleeping bag?
The Magma 15 features a left-side zipper. To zip two bags together, one should have a right-side zipper. Compatibility depends on matching zipper types and lengths.
What is the comfort rating of the Magma 15?
The Magma 15 has a comfort rating of 28°F (-2.2°C), suitable for most 3-season backpacking trips.
Final Thoughts
The REI Co-op Magma 15 offers an impressive combination of warmth, weight savings, and affordability. Its high-quality down insulation and thoughtful design make it a reliable choice for backpackers seeking performance without breaking the bank. While it may not be the absolute lightest option available, its balance of features and cost make it a standout in its category.
