← All gear comparisons

Forclaz Trek MT900 5°C Down vs REI Co-op Magma 15

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

No winner on weight yet. The recorded weights have not both been verified on the same basis. Size, included parts and single-item versus pair weights can differ. Check the linked sources before choosing a replacement.

Swipe to see all details.

Spec Forclaz Trek MT900 5°C Down REI Co-op Magma 15
Weight 830 g · 0.830 kg · 1.83 lb 850 g · 0.850 kg · 1.87 lb
Brand Forclaz REI Co-op
Category Sleep System Sleep System
Forclaz Trek MT900 5°C Down
830 g

700 fill power RDS down mummy-style sleeping bag with 90% duck down. Ideal for 3-season trekking with anatomical hood and adjustable footbox. 5°C comfort rating...

See it in your base weight → Full details →
REI Co-op Magma 15
850 g

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

See it in your base weight → Full details →

Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.

HikeLoad is reader-supported. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.

Forclaz Trek MT900 5°C Down vs REI Co-op Magma 15: which should you buy?

The listed weights alone are not enough to choose between these products. Confirm the size, included parts and weight basis against each source; choose equipment for the function and fit you need.

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

More sleep system comparisons

Forclaz Trek MT900 5°C Down vs Therm-a-Rest Parsec 20F Forclaz Trek MT900 5°C Down vs Western Mountaineering Ultralite 20F Sleeping Bag Forclaz Trek MT900 5°C Down vs Feathered Friends Swallow YF 20°F Forclaz Trek MT900 5°C Down vs Marmot Plasma 15°F Forclaz Trek MT900 5°C Down vs Western Mountaineering AlpinLite 20