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Western Mountaineering AlpinLite 20 vs Western Mountaineering AstraLite

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 Western Mountaineering AlpinLite 20 Western Mountaineering AstraLite
Weight 879 g · 0.879 kg · 1.94 lb
size 6'0" (180 cm), 20°F, total weight; 1 lb 15 oz omgerekend
 454 g · 0.454 kg · 1.00 lb
size 5'8" (180 cm), the shorter of two sizes (6'4" = 496 g); no Regular/Medium label on page
Brand Western Mountaineering Western Mountaineering
Category Sleep System Sleep System
Western Mountaineering AlpinLite 20
879 g

Roomy 20F mummy bag with 850+ goose down and continuous baffles, balancing warmth, comfort and low weight.

See it in your base weight → Full details →
Western Mountaineering AstraLite
454 g

Ultralight 3-season sleeping bag with 850fp down and 12D shell. Designed for fast-and-light alpine pursuits and long trail journeys.

See it in your base weight → Full details →

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Western Mountaineering AlpinLite 20 vs Western Mountaineering AstraLite: 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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