Mountain Hardwear Ghost Whisperer 20°F vs Therm-a-Rest Vesper 900
Weight and specs compared for 2026 — and which one to choose.
Ultralight 800-fill down sleeping bag in minimalist design.
Ultralight sleeping bag with 900 fill-power hydrophobic goose down. 360g of down fill. Excellent warmth-to-weight ratio for three-season backpacking trips.
Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.
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Mountain Hardwear Ghost Whisperer 20°F vs Therm-a-Rest Vesper 900: 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.