Therm-a-Rest
Therm-a-Rest NeoAir XLite NXT
$210
Best Sleeping Pads · head-to-head
Therm-a-Rest NeoAir XLite NXT vs Sea to Summit Ether Light XT Insulated
A sourced, side-by-side comparison. Sea to Summit Ether Light XT Insulated is cheaper at $199. Every spec and price links to its source.
Sea to Summit
Sea to Summit Ether Light XT Insulated
$199Cheaper
Which is better: the Therm-a-Rest NeoAir XLite NXT or Sea to Summit Ether Light XT Insulated?
On the specs we track, they're closely matched. The Sea to Summit Ether Light XT Insulated is the cheaper at $199.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Therm-a-Rest NeoAir XLite NXT | Sea to Summit Ether Light XT Insulated |
|---|---|---|
| US price | $210 | $199 |
| Brand | Therm-a-Rest | Sea to Summit |
| Released | — | — |
| R value | 4.5 | 3.2 |
| Pad type | air | air |
| Weight grams | 370 | 490 |
| Thickness (cm) | 7.6 | 10 |
| Dimensions (cm) | 183 x 51 cm | 183 x 55 |
| Packed size (cm) | 23 x 10 cm | 24 x 11 |
| Insulation type | reflective-film | synthetic-fill |
| Inflation type | pump-sack | pump-sack |
| Shell denier | 30 | 30 |
| Shape | tapered | mummy |
Sources — Therm-a-Rest NeoAir XLite NXT: cascadedesigns.com (verified 2026-07-11). Sea to Summit Ether Light XT Insulated: seatosummit.com (verified 2026-07-11).
What's the difference between the Therm-a-Rest NeoAir XLite NXT and Sea to Summit Ether Light XT Insulated?
Where the two actually differ on the specs we track (7 of 10). Matching specs are omitted.
- R value: Therm-a-Rest NeoAir XLite NXT 4.5 vs Sea to Summit Ether Light XT Insulated 3.2
- Weight grams: Therm-a-Rest NeoAir XLite NXT 370 vs Sea to Summit Ether Light XT Insulated 490
- Thickness (cm): Therm-a-Rest NeoAir XLite NXT 7.6 vs Sea to Summit Ether Light XT Insulated 10
- Dimensions (cm): Therm-a-Rest NeoAir XLite NXT 183 x 51 cm vs Sea to Summit Ether Light XT Insulated 183 x 55
- Packed size (cm): Therm-a-Rest NeoAir XLite NXT 23 x 10 cm vs Sea to Summit Ether Light XT Insulated 24 x 11
- Insulation type: Therm-a-Rest NeoAir XLite NXT reflective-film vs Sea to Summit Ether Light XT Insulated synthetic-fill
- Shape: Therm-a-Rest NeoAir XLite NXT tapered vs Sea to Summit Ether Light XT Insulated mummy
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Therm-a-Rest NeoAir XLite NXT
Three whitelisted testers (CleverHiker, Switchback Travel, GearJunkie) field-tested the NeoAir XLite NXT and rate it a top ultralight three-season pad: 4.5 R-value at ~13 oz, highly packable (about a 1L Nalgene), and far quieter than the crinkly older XLite. All three flag the premium price. CleverHiker and GearJunkie also knock the pump sack; Switchback flags stiff, slippery baffles with slide-off and temperature-shift deflation. (3 sourced reviews, 3 lab-tested.)
Praised: Excellent warmth-to-weight ratio (4.5 R-value at ~13 oz); Much quieter than the previous crinkly XLite; Highly packable / compact (about a 1L Nalgene).
Flagged: Expensive / premium price; Pump sack mediocre — bulky and not the easiest to use; Stiff, slippery baffles; can slide off; temp-shift deflation.
Sea to Summit Ether Light XT Insulated
No sourced tester review yet.