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Therm-a-Rest Vesper 32 vs Therm-a-Rest Vesper 900

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

Both weigh the same at 550 g, so choose on features, price and fit.
Spec Therm-a-Rest Vesper 32 Therm-a-Rest Vesper 900
Weight 550 g · 0.550 kg · 1.21 lb 550 g · 0.550 kg · 1.21 lb
Brand Therm-a-Rest Therm-a-Rest
Category Sleep System Sleep System
Therm-a-Rest Vesper 32
550 g

Ultralight 32°F sleeping bag with 900-fill-power hydrophobic goose down. Excellent warmth-to-weight ratio for 3-season backpacking.

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Therm-a-Rest Vesper 900
550 g

Ultralight sleeping bag with 900 fill-power hydrophobic goose down. 360g of down fill. Excellent warmth-to-weight ratio for three-season backpacking trips.

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Therm-a-Rest Vesper 32 vs Therm-a-Rest Vesper 900: which should you buy?

On weight these two are identical (550 g), so your decision comes down to features, fit and price. Check the full details and current price for each above.

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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