Cumulus Neo Quilt 450 vs Rab Mythic Ultra 20
Weight and specs compared for 2026 — and which one to choose.
Ultra-lightweight quilt with 450g 900-fill goose down, closed footbox design. Comfort rating -2°C. 39 compartments with H-shaped baffles prevent cold spots and...
Full details →20-degree sleeping bag weighing 440g. Features TILT lining technology that reflects heat back to achieve superior warmth-to-weight ratio.
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Cumulus Neo Quilt 450 vs Rab Mythic Ultra 20: which should you buy?
If saving weight is your priority, the Rab Mythic Ultra 20 wins — at 440 g it is 170 g (28%) lighter than the Cumulus Neo Quilt 450 (610 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.