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Therm-a-Rest Vesper 20 Sleeping Bag vs Therm-a-Rest Vesper 20F

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 20 Sleeping Bag Therm-a-Rest Vesper 20F
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 20 Sleeping Bag
550 g

900-fill hydrophobic goose down sleeping bag rated to 20°F/-6°C. Ultralight and highly compressible for three-season backpacking.

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Therm-a-Rest Vesper 20F
550 g

Ultralight quilt with 900-fill hydrophobic Nikwax Treated Down. Rated 20°F with neck baffle and footbox snap. Among lightest mainstream quilts.

Full details →

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Therm-a-Rest Vesper 20 Sleeping Bag vs Therm-a-Rest Vesper 20F: 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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