Therm-a-Rest NeoAir XLite NXT Regular vs Western Mountaineering Ultralite 20°F
Weight and specs compared for 2026 — and which one to choose.
Inflatable sleeping pad with R-value 4.5, 7.6cm thickness, Triangular Core Matrix baffles for warmth, and WingLock valve for fast inflation.
Full details →Premium 850-fill down sleeping bag rated to 20°F (-7°C).
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Therm-a-Rest NeoAir XLite NXT Regular vs Western Mountaineering Ultralite 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 311 g (46%) lighter than the Western Mountaineering Ultralite 20°F (680 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.