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Mountain Hardwear Ghost Whisperer 20°F vs Western Mountaineering Ultralite 20F Sleeping Bag

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

Mountain Hardwear Ghost Whisperer 20°F is the lighter option — 283 g lighter than the Western Mountaineering Ultralite 20F Sleeping Bag (34% less weight). If grams matter to you, that is the one to beat.
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Spec Mountain Hardwear Ghost Whisperer 20°F Western Mountaineering Ultralite 20F Sleeping Bag
Weight 539 g · 0.539 kg · 1.19 lb 822 g · 0.822 kg · 1.81 lb
Brand Mountain Hardwear Western Mountaineering
Category Sleep System Sleep System
Mountain Hardwear Ghost Whisperer 20°F
539 g

Ultralight 800-fill down sleeping bag in minimalist design.

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Western Mountaineering Ultralite 20F Sleeping Bag
822 g

Hand-sewn sleeping bag, 29oz, 850+ fill power goose down, three-season

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Mountain Hardwear Ghost Whisperer 20°F vs Western Mountaineering Ultralite 20F Sleeping Bag: which should you buy?

If saving weight is your priority, the Mountain Hardwear Ghost Whisperer 20°F wins — at 539 g it is 283 g (34%) lighter than the Western Mountaineering Ultralite 20F Sleeping Bag (822 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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