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Forclaz Trek MT900 5°C Down vs Sierra Designs Nitro Quilt 20

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

Sierra Designs Nitro Quilt 20 is the lighter option — 122 g lighter than the Forclaz Trek MT900 5°C Down (15% less weight). If grams matter to you, that is the one to beat.
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Spec Forclaz Trek MT900 5°C Down Sierra Designs Nitro Quilt 20
Weight 830 g · 0.830 kg · 1.83 lb 708 g · 0.708 kg · 1.56 lb
Brand Forclaz Sierra Designs
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...

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Sierra Designs Nitro Quilt 20
708 g

Ultralight down quilt at 708g. 14.8oz of 800-fill water-resistant DriDown, 20-degree rating.

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Forclaz Trek MT900 5°C Down vs Sierra Designs Nitro Quilt 20: which should you buy?

If saving weight is your priority, the Sierra Designs Nitro Quilt 20 wins — at 708 g it is 122 g (15%) lighter than the Forclaz Trek MT900 5°C Down (830 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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