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Mountain Hardwear Ghost Whisperer 20°F vs Sea to Summit Spark 30 Sleeping Bag

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 Mountain Hardwear Ghost Whisperer 20°F Sea to Summit Spark 30 Sleeping Bag
Weight 539 g · 0.539 kg · 1.19 lb 482 g · 0.482 kg · 1.06 lb
size Regular, 30°F / -1°C
Brand Mountain Hardwear Sea to Summit
Category Sleep System Sleep System
Mountain Hardwear Ghost Whisperer 20°F
539 g

Ultralight 800-fill down sleeping bag in minimalist design.

See it in your base weight → Full details →
Sea to Summit Spark 30 Sleeping Bag
482 g

Ultralight 30°F mummy bag filled with 850+ loft down. Differential cut and ripstop shell deliver excellent warmth-to-weight ratio.

See it in your base weight → Full details →

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Mountain Hardwear Ghost Whisperer 20°F vs Sea to Summit Spark 30 Sleeping Bag: 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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