Therm-a-Rest NeoAir XLite NXT Regular vs Zpacks Sleeping Bag 20°F

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

Therm-a-Rest NeoAir XLite NXT Regular is the lighter option — 28 g lighter than the Zpacks Sleeping Bag 20°F (7% less weight). If grams matter to you, that is the one to beat.

Spec	Therm-a-Rest NeoAir XLite NXT Regular	Zpacks Sleeping Bag 20°F
Weight	369 g · 0.369 kg · 0.81 lb	397 g · 0.397 kg · 0.88 lb
Brand	Therm-a-Rest	Zpacks
Category	Sleep System	Sleep System

Therm-a-Rest NeoAir XLite NXT Regular

369 g

Inflatable sleeping pad with R-value 4.5, 7.6cm thickness, Triangular Core Matrix baffles for warmth, and WingLock valve for fast inflation.

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Zpacks Sleeping Bag 20°F

397 g

Ultralight 900-fill down sleeping bag rated to 20°F.

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Therm-a-Rest NeoAir XLite NXT Regular vs Zpacks Sleeping Bag 20°F: which should you buy?

If saving weight is your priority, the Therm-a-Rest NeoAir XLite NXT Regular wins — at 369 g it is 28 g (7%) lighter than the Zpacks Sleeping Bag 20°F (397 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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