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Enlightened Equipment Revelation 20°F (950FP Regular/Regular) vs Therm-a-Rest Vesper 20 Sleeping Bag

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

Therm-a-Rest Vesper 20 Sleeping Bag is the lighter option — 16 g lighter than the Enlightened Equipment Revelation 20°F (950FP Regular/Regular) (3% less weight). If grams matter to you, that is the one to beat.
Spec Enlightened Equipment Revelation 20°F (950FP Regular/Regular) Therm-a-Rest Vesper 20 Sleeping Bag
Weight 566 g · 0.566 kg · 1.25 lb 550 g · 0.550 kg · 1.21 lb
Brand Enlightened Equipment Therm-a-Rest
Category Sleep System Sleep System
Enlightened Equipment Revelation 20°F (950FP Regular/Regular)
566 g

Ultralight backpacking quilt with 950-fill power down rated to 20°F (-7°C). Features adjustable footbox and neck collar for versatile sleeping positions.

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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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Enlightened Equipment Revelation 20°F (950FP Regular/Regular) vs Therm-a-Rest Vesper 20 Sleeping Bag: which should you buy?

If saving weight is your priority, the Therm-a-Rest Vesper 20 Sleeping Bag wins — at 550 g it is 16 g (3%) lighter than the Enlightened Equipment Revelation 20°F (950FP Regular/Regular) (566 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.

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