Sea to Summit Ether Light XT vs Therm-a-Rest NeoAir XLite NXT

By Billy G. · Founder & Lead EditorVerified Jun 7 by Billy G.

✓ Verified Confidence: 85%

Verdict: The NeoAir XLite NXT outperforms on weight and warmth with a 4.5 R-value versus 3.2, making it the stronger choice for backpackers per OutdoorGearLab tests. The Ether Light XT provides superior cushioning at 10 cm thick but adds 100 g and limits cold-weather use. This is a close call for car campers but the NXT pulls ahead for serious backcountry trips.

Winner: Therm-a-Rest NeoAir XLite NXT

Sea to Summit Ether Light XT: 7.5/10

Therm-a-Rest NeoAir XLite NXT: 8.2/10

Spec-by-spec comparison

	Sea to Summit Ether Light XT	Therm-a-Rest NeoAir XLite NXT
weight	440 g	340 g
r_value	3.2	4.5
thickness	10 cm	7.6 cm
packed_size	20 x 11 cm	18 x 10 cm

Bottom line

Our pick: Therm-a-Rest NeoAir XLite NXT.

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