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Cumulus Aerial 250 vs Western Mountaineering HighLite 35F

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.

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Spec Cumulus Aerial 250 Western Mountaineering HighLite 35F
Weight 385 g · 0.385 kg · 0.85 lb 425 g · 0.425 kg · 0.94 lb
size 5'6" (165 cm), the shortest; 6'0" is 16 oz (455 g); no 'Regular' size on the site
Brand Cumulus Western Mountaineering
Category Sleep System Sleep System
Cumulus Aerial 250
385 g

Ultralight down sleeping bag with 900 FP goose down, single-layer design with no zipper, perfect for thru-hiking and backpacking.

See it in your base weight → Full details →
Western Mountaineering HighLite 35F
425 g

Ultralight 850-fill ethical down mummy bag rated 35F with 7D ripstop nylon shell. Best-in-class warmth-to-weight ratio for three-season use.

See it in your base weight → Full details →

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Cumulus Aerial 250 vs Western Mountaineering HighLite 35F: 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.

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