Quick Answer

For most therm-a-rest neoair pads shoppers, the Therm-a-Rest NeoAir XLite NXT is the simpler pick — on published specs it's both 85 g lighter and $20 cheaper than the Therm-a-Rest NeoAir XTherm. The other side wins only on non-spec factors like fit, availability, or brand preference.

How this comparison works: a side-by-side of published manufacturer specifications. Only the Therm-a-Rest NeoAir XTherm has a full research-based review on this site. The other product is spec-only, clearly marked.

The Specs Side by Side

Therm-a-Rest Therm-a-Rest NeoAir XLite NXTSleep System

Therm-a-Rest

Therm-a-Rest NeoAir XLite NXT

Price (MSRP)
$210
Weight
0.35 kg (354 g)
Ultralight
Yes
Our rating
specs only — no full review yet

Manufacturer description

Inflatable 3-season pad, R-4.5, ~0.35 kg regular, 7.6 cm thick.

Therm-a-Rest Therm-a-Rest NeoAir XThermSleep System

Therm-a-Rest

Therm-a-Rest NeoAir XTherm

Price (MSRP)
$230
Weight
0.44 kg (439 g)
Ultralight
Yes
R-value
7.3
Our rating
9.3/10

Our verdict

The Therm-a-Rest NeoAir XTherm NXT is the gold standard for four-season ultralight sleeping pads. With an R-value of 7.3 and a weight of just 15.5 ounces, it delivers exceptional warmth-to-weight performance that no competitor currently matches.

What the Numbers Say

  • Weight: Therm-a-Rest NeoAir XLite NXT is the lighter of the two by 85 g (0.35 kg vs 0.44 kg). For thru-hiking and any pursuit where carry weight compounds across days, that delta matters.
  • Price: Therm-a-Rest NeoAir XLite NXT is cheaper at MSRP by $20 ($210 vs $230). Real-world street prices vary, but the starting MSRP gap is consistent.
  • Ultralight classification: both products are classified ultralight in their category — built for weight-conscious backpackers from the start.
  • Review coverage: only the Therm-a-Rest NeoAir XTherm has a full research-based review (rated 9.3/10). The Therm-a-Rest NeoAir XLite NXT figures here are manufacturer-published specs only.

Detailed Breakdown

Carry weight and packed size

On the published spec sheet, the Therm-a-Rest NeoAir XLite NXT comes in at 354 grams against the 439 grams of the Therm-a-Rest NeoAir XTherm. That 85-gram gap may sound trivial in isolation but compounds across multi-day trips — at 25 km a day for a week, you're carrying that delta for about 175 km of trail. The Therm-a-Rest NeoAir XLite NXT's ultralight classification reflects the deliberate design choices that produce the saving: thinner fabrics, simpler architectures, or fewer secondary features.

Price and total cost of ownership

MSRP gap: $20 (Therm-a-Rest NeoAir XLite NXT cheaper). For most buyers that's the only price number that matters short-term. Long-term cost depends on durability and warranty handling: a product that lasts seven seasons at $230 costs less per use than a product that lasts three at $210. Without long-term field data on both we won't claim a winner on durability, but it's the lens to apply if you re-sell or replace gear infrequently. Look for current sales on either before assuming MSRP is what you'll pay.

Materials and durability

Material composition for both products comes from the manufacturer product pages and is not always reported in directly comparable units. The Therm-a-Rest NeoAir XLite NXT carries the manufacturer's published spec only; the Therm-a-Rest NeoAir XTherm has a full research-based review (rated 9.3/10). For the reviewed product, the durability verdict in the linked review draws on published testing and owner feedback. For the spec-only product, treat material claims as starting points, not verified data.

Features and ergonomics

Manufacturer feature descriptions: the Therm-a-Rest NeoAir XLite NXT — Inflatable 3-season pad, R-4.5, ~0.35 kg regular, 7.6 cm thick.. The Therm-a-Rest NeoAir XTherm (no manufacturer description filed). Pay particular attention to fit, adjustability, and hand-feel — three dimensions that don't show on a spec sheet and that disproportionately determine whether you'll actually reach for the gear after the first trip.

Use-case fit

The therm-a-rest neoair pads category covers a wide range of trip styles. For weight-counted thru-hikes, lean toward whichever is lighter on this page — every gram in your pack rides with you for thousands of kilometers. For weekend trips and base-camp days, weight matters less and durability, comfort, and feature count matter more — the heavier of the two on this page often makes more sense in those scenarios. For three-season generalist use, our recommendation: prioritize the product you can read a full research-based verdict on — that's the Therm-a-Rest NeoAir XTherm here.

Brand support and availability

Both products come from Therm-a-Rest, so brand-side warranty handling and customer service experience should be identical. Availability varies: smaller cottage brands may require direct-from-manufacturer ordering with 2-6 week lead times, while bigger brands stock through REI, Backcountry, and large EU outdoor chains with same-week shipping. Before buying either, check the manufacturer's warranty terms (often 1, 2, or 10 years depending on brand culture) and the brand's reputation for honoring claims on minor failures versus catastrophic ones. Our research-based review notes warranty interactions where relevant, based on owner reports.

Frequently Asked Questions

Which is lighter, the Therm-a-Rest NeoAir XLite NXT or the Therm-a-Rest NeoAir XTherm?

On published manufacturer specs, the Therm-a-Rest NeoAir XLite NXT is the lighter of the two by 85 grams (0.35 kg vs 0.44 kg). For ultralight backpackers counting grams in the therm-a-rest neoair pads category, that's a meaningful difference.

Which costs less, the Therm-a-Rest NeoAir XLite NXT or the Therm-a-Rest NeoAir XTherm?

At MSRP, the Therm-a-Rest NeoAir XLite NXT costs $20 less than the Therm-a-Rest NeoAir XTherm ($210 vs $230). Real-world prices fluctuate with sales and seasonal promotions, but the spec-sheet starting price is clear.

Does this site have full reviews of both products?

The Therm-a-Rest NeoAir XTherm has a full research-based review (rated 9.3/10), drawing on published testing and owner feedback. The Therm-a-Rest NeoAir XLite NXT figures on this page are published manufacturer specs only.

Is the Therm-a-Rest NeoAir XLite NXT ultralight by industry standards?

Yes. The Therm-a-Rest NeoAir XLite NXT is classified ultralight in our database (0.35 kg, sub-threshold for its sleep system category). Ultralight therm-a-rest neoair pads typically means built for thru-hikers and gram counters rather than three-season car-camping use.

Is the Therm-a-Rest NeoAir XTherm ultralight by industry standards?

Yes. The Therm-a-Rest NeoAir XTherm is classified ultralight in our database (0.44 kg, sub-threshold for its sleep system category). Built for thru-hikers and weight-conscious backpackers.

Is the price difference worth it?

The Therm-a-Rest NeoAir XTherm costs $20 more without a corresponding weight or spec advantage on paper. Unless it has a hidden benefit (better fit, longer warranty, brand reputation), the Therm-a-Rest NeoAir XLite NXT is the better value spec-sheet pick.

Where can I read the full review?

Only the Therm-a-Rest NeoAir XTherm has a full review at https://peakgearguide.com/reviews/thermarest-neoair-xtherm. The Therm-a-Rest NeoAir XLite NXT does not have a full review yet — we list its manufacturer specifications only.

Bottom Line

Winner on weight: the Therm-a-Rest NeoAir XLite NXT by 85 g (0.35 kg vs 0.44 kg). If your trip style punishes grams, that's the pick.

Winner on price: the Therm-a-Rest NeoAir XLite NXT at $210 versus $230 for the Therm-a-Rest NeoAir XTherm — a $20 gap that may close or widen with current sales.

Our overall lean: the Therm-a-Rest NeoAir XTherm is the safer pick because it has a full research-based review (9.3/10) where published testing and owner feedback corroborate the spec claims. The Therm-a-Rest NeoAir XLite NXT may well be excellent, but we can't say so from spec data alone.

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