Feathered Friends Swallow YF 20°F vs NEMO Tensor Elite Ultralight Insulated

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

NEMO Tensor Elite Ultralight Insulated is the lighter option — 411 g lighter than the Feathered Friends Swallow YF 20°F (58% less weight). If grams matter to you, that is the one to beat.

Spec	Feathered Friends Swallow YF 20°F	NEMO Tensor Elite Ultralight Insulated
Weight	709 g · 0.709 kg · 1.56 lb	298 g · 0.298 kg · 0.66 lb
Brand	Feathered Friends	NEMO
Category	Sleep System	Sleep System

Feathered Friends Swallow YF 20°F

709 g

Premium 950-fill down sleeping bag rated to 20°F.

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NEMO Tensor Elite Ultralight Insulated

298 g

Lightest insulated inflatable sleeping pad on the market. Trapezoidal baffles eliminate cold spots; inflates in under 60 seconds with pump sack.

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Feathered Friends Swallow YF 20°F vs NEMO Tensor Elite Ultralight Insulated: which should you buy?

If saving weight is your priority, the NEMO Tensor Elite Ultralight Insulated wins — at 298 g it is 411 g (58%) lighter than the Feathered Friends Swallow YF 20°F (709 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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