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Cumulus The Quilt 600 vs Western Mountaineering MegaLite 35°F

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

Western Mountaineering MegaLite 35°F is the lighter option — 295 g lighter than the Cumulus The Quilt 600 (37% less weight). If grams matter to you, that is the one to beat.
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Spec Cumulus The Quilt 600 Western Mountaineering MegaLite 35°F
Weight 805 g · 0.805 kg · 1.77 lb 510 g · 0.510 kg · 1.12 lb
Brand Cumulus Western Mountaineering
Category Sleep System Sleep System
Cumulus The Quilt 600
805 g

Four-season ultralight quilt with 600g 800-fill power hydrophobic goose down. Premium 7D Toray Airtastic ripstop shell. Exceptional warmth-to-weight for winter...

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Western Mountaineering MegaLite 35°F
510 g

Ultralight 850-fill down bag for warm summer conditions.

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Cumulus The Quilt 600 vs Western Mountaineering MegaLite 35°F: which should you buy?

If saving weight is your priority, the Western Mountaineering MegaLite 35°F wins — at 510 g it is 295 g (37%) lighter than the Cumulus The Quilt 600 (805 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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