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NEMO Tensor Trail vs REI Co-op Magma 15

Weight and specs compared for 2026 — and which one to choose.

NEMO Tensor Trail is the lighter option — 481 g lighter than the REI Co-op Magma 15 (57% less weight). If grams matter to you, that is the one to beat.
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Spec NEMO Tensor Trail REI Co-op Magma 15
Weight 369 g · 0.369 kg · 0.81 lb 850 g · 0.850 kg · 1.87 lb
Brand NEMO REI Co-op
Category Sleep System Sleep System
NEMO Tensor Trail
369 g

Ultralight insulated sleeping pad with Spaceframe baffles. R-Value of 2.8 for 3-season use.

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REI Co-op Magma 15
850 g

850-fill down sleeping bag rated to 15°F. Great value.

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NEMO Tensor Trail vs REI Co-op Magma 15: which should you buy?

If saving weight is your priority, the NEMO Tensor Trail wins — at 369 g it is 481 g (57%) lighter than the REI Co-op Magma 15 (850 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.

See where both rank against everything else in this category on the lightest sleep system page, or browse the full gear weight database.

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