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Nemo Flyer vs Therm-a-Rest Vesper 32

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

Therm-a-Rest Vesper 32 is the lighter option — 102 g lighter than the Nemo Flyer (16% less weight). If grams matter to you, that is the one to beat.
Spec Nemo Flyer Therm-a-Rest Vesper 32
Weight 652 g · 0.652 kg · 1.44 lb 550 g · 0.550 kg · 1.21 lb
Brand Nemo Therm-a-Rest
Category Sleep System Sleep System
Nemo Flyer
652 g

Self-inflating baffled air sleeping pad with 5cm of foam-backed comfort and a regular packed weight around 650g.

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

If saving weight is your priority, the Therm-a-Rest Vesper 32 wins — at 550 g it is 102 g (16%) lighter than the Nemo Flyer (652 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