Therm-a-Rest NeoAir XTherm NXT vs Therm-a-Rest NeoLoft
In short: The Therm-a-Rest NeoAir XTherm NXT costs $20 less; the Therm-a-Rest NeoAir XTherm NXT is warmer by 2.6 points of R-value; the Therm-a-Rest NeoAir XTherm NXT saves 9.5 oz; the Therm-a-Rest NeoLoft is 4.6 inches thick against 3.
| Spec | Therm-a-Rest NeoAir XTherm NXT | Therm-a-Rest NeoLoft |
|---|---|---|
| Approx. price | ~$230 | ~$250 |
| R-value | R 7.3 | R 4.7 |
| Season band | Winter | Cold three-season |
| R-value standard | ASTM F3340 | ASTM F3340 |
| Weight | 15.5 oz | 1 lb 9 oz |
| R per ounce | 0.47 R/oz | 0.19 R/oz |
| Thickness | 3 in | 4.6 in |
| Pad type | air | air |
| Inflation | pump sack | pump sack |
| Dimensions | 72 × 20 in | 73 × 22 in |
| Packed size | 9 × 4.5 in | 9.5 × 5.7 in |
| Insulation | Four layers of reflective ThermaCapture film over triangular core matrix baffles | Reflective film over a stabilised air core, under a stretch-knit face |
| Top fabric | 30D | 50D |
Shaded cells mark the row where one has a measurable advantage. Weight, thickness, girth and shape are left unshaded on purpose: heavier is sometimes tougher, wider is sometimes warmer, and calling a winner on those would be an opinion dressed as a measurement.
What each one does well, and costs you
Therm-a-Rest NeoAir XTherm NXT
- 7.3 R-value clears the winter threshold with room to spare, and at 15.5 ounces it does it for less weight than most three-season pads.
- The 70-denier bottom fabric is more than twice the XLite's, which is what lets it live on snow, ice crust and scree.
- Same 3-inch loft and same WingLock valve as the XLite, so nothing about the sleeping experience gets worse in exchange for the warmth.
- Only 2.5 ounces heavier than the XLite — the cheapest warmth upgrade per ounce anywhere in this catalogue.
- Packs to 9 × 4.5 inches, small enough that winter kit doesn't need a bigger pack to hold it.
- The extra film layers make it noticeably crinklier than the XLite, and that is the complaint that comes up most.
- $230 is a serious price for a pad you may only need three or four months of the year.
- Still 20 inches wide in the Regular, so the winter sleeping bag's loft hangs off the sides and gets compressed against the ground.
- Carrying 7.3 R-value on a summer trip is dead weight; it is a specialist pad pretending to be a do-everything one.
Therm-a-Rest NeoLoft
- 4.6 inches of loft is the deepest backpacking pad here, and it is the difference between a hip that bottoms out and one that doesn't.
- The 50-denier stretch-knit top is quiet and warm to the touch — none of the crinkle or the clammy plastic feel of a reflective-film pad.
- 22 inches wide as standard rather than 20, with a 26-inch Wide above it.
- 4.7 R-value covers the same three-season range as an XLite, so the comfort doesn't cost warmth.
- Heavier fabric means it tolerates a tent floor without a groundsheet better than the ultralight pads do.
- 25 ounces is twice an XLite and puts it within a few ounces of self-inflating pads that cost $100 less.
- Packs to 9.5 × 5.7 inches — noticeably bulkier in a small pack than the pad it is meant to replace.
- Thick pads sit you high off the ground, which makes a narrow tent feel narrower and a quilt's draft gap harder to seal.
- New enough in 2025 that its long-term seam and valve record is still being written.