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Therm-a-Rest Vesper 32F Down Quilt vs Western Mountaineering Versalite 10°F

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

Therm-a-Rest Vesper 32F Down Quilt is the lighter option — 300 g lighter than the Western Mountaineering Versalite 10°F (35% less weight). If grams matter to you, that is the one to beat.
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Spec Therm-a-Rest Vesper 32F Down Quilt Western Mountaineering Versalite 10°F
Weight 550 g · 0.550 kg · 1.21 lb 850 g · 0.850 kg · 1.87 lb
Brand Therm-a-Rest Western Mountaineering
Category Sleep System Sleep System
Therm-a-Rest Vesper 32F Down Quilt
550 g

Premium ultralight quilt with 900-fill hydrophobic down. Rated 32F/0C. At 550g it is the lightest mainstream quilt in its temperature class.

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Western Mountaineering Versalite 10°F
850 g

850-fill down sleeping bag rated to 10°F (-12°C).

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Therm-a-Rest Vesper 32F Down Quilt vs Western Mountaineering Versalite 10°F: which should you buy?

If saving weight is your priority, the Therm-a-Rest Vesper 32F Down Quilt wins — at 550 g it is 300 g (35%) lighter than the Western Mountaineering Versalite 10°F (850 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.

More sleep system comparisons