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Therm-a-Rest NeoAir XLite NXT Sleeping Pad vs Western Mountaineering MegaLite 35°F

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

Therm-a-Rest NeoAir XLite NXT Sleeping Pad is the lighter option — 156 g lighter than the Western Mountaineering MegaLite 35°F (31% less weight). If grams matter to you, that is the one to beat.
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Spec Therm-a-Rest NeoAir XLite NXT Sleeping Pad Western Mountaineering MegaLite 35°F
Weight 354 g · 0.354 kg · 0.78 lb 510 g · 0.510 kg · 1.12 lb
Brand Therm-a-Rest Western Mountaineering
Category Sleep System Sleep System
Therm-a-Rest NeoAir XLite NXT Sleeping Pad
354 g

Ultralight inflatable sleeping pad with R-value 4.5. ThermaCapture and Triangular Core Matrix technology. WingLock valve. Regular size (25x72 in).

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Western Mountaineering MegaLite 35°F
510 g

Ultralight 850-fill down bag for warm summer conditions.

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Therm-a-Rest NeoAir XLite NXT Sleeping Pad vs Western Mountaineering MegaLite 35°F: which should you buy?

If saving weight is your priority, the Therm-a-Rest NeoAir XLite NXT Sleeping Pad wins — at 354 g it is 156 g (31%) lighter than the Western Mountaineering MegaLite 35°F (510 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