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Western Mountaineering HighLite 35F vs Zpacks Classic Sleeping Bag 20F

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 HighLite 35F Zpacks Classic Sleeping Bag 20F
Weight 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
 533 g · 0.533 kg · 1.18 lb
size Standard-Medium (fits up to 6'0"), 20°F; no size called Regular exists
Brand Western Mountaineering Zpacks
Category Sleep System Sleep System
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 →
Zpacks Classic Sleeping Bag 20F
533 g

Mummy-style sleeping bag rated to 20F (-7C) with 900-fill goose down. DCF outer shell for low weight and packability. Water-resistant treatment included.

See it in your base weight → Full details →

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Western Mountaineering HighLite 35F vs Zpacks Classic Sleeping Bag 20F: 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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