Therm-a-Rest
Therm-a-Rest NeoAir XLite NXT (Regular)
Where it fits
- Also works for
- Bikepacking, Backpacking and wild camping
Why these labels
- Bikepacking: Small enough for bike bags: packs to 1.8 litres
- Backpacking and wild camping: Light to carry: 0.4 kg
From the maker's stated use and the published specs.
- Summer wild camp: 8/10 UK, roughly May to September, nights above about 8 °C, sheltered pitches.
- Three-season hills: 7/10 UK hills in spring and autumn. Wind, rain, and nights near freezing.
- Winter camp: 7/10 UK winter or high ground. Below freezing, strong wind, possibly snow.
- Weight: 9/10 How much it adds to your pack, compared with the whole market.
R-value 4.5 (ASTM).
Lowest price we found
£203.99 at Ultralight Outdoor Gear
Go to Ultralight Outdoor Gear Compare 3 shopsSpring-to-autumn and mild-winter wild camps where a warm, thick mat at very low weight matters
- Valve
- WingLock
- Baffles
- Triangular Core Matrix
- Type
- Air
- R-value
- 4.5 (ASTM)
- Weight
- 370 g (Regular)
- Thickness
- 7.6 cm
- Size
- 183 x 51 cm
Packed size 1.8 L, 23 cm long and 10 cm across Compare with a 2-litre bottle
Shorter than a 2-litre bottle and about as wide as one. Drawn to scale.
Where to buy
Ultralight Outdoor Gear £203.99 In stock. Free delivery.
View at shop: Ultralight Outdoor GearOutside £216 In stock. Free delivery.
View at shop: OutsideEllis Brigham £240 In stock. Free delivery.
View at shop: Ellis BrighamPrices checked 8 Nov 2026 on each shop's own page; shops can change them. We earn no commission on these links; shops are listed by price. More
Our ratings (out of 10)
1 to 10, compared with the whole market. Each says what it's based on. How we score
Warmth
From maker's figures 7/10How well it stops the cold ground chilling you. 7: Better than most.
Maker's R-value of 4.5 sits in the R 4–5.4 band: fine for spring, autumn and mild winter nights, not deep cold. Therm-a-Rest's product-page FAQ says its R-values use the ASTM F3340-18 standard.
Thickness
From maker's figures 7/10How deep it is. Deeper is comfier, above all for side sleepers. 7: Better than most.
7.6 cm thick.
Quietness
From reviews 7/10How little it crinkles or squeaks when you turn over. 7: Better than most.
Much quieter than the old XLite but not silent: reviewers still hear a faint crinkle when you roll over.
Weight
From maker's figures 9/10How much it adds to your pack. 9: Among the best you can buy for this.
370 g is the maker's figure and the one Ellis Brigham's spec table shows; some shop text still says 354 g (older figure). Testers weighed it at 377-386 g. All under 400 g.
Packed size
From maker's figures 8/10How much room it takes in or on your rucksack. 8: Clearly better than most.
Packs to 23 x 10 cm: 3.1416 x 5 x 5 x 23 = 1,806 cm³, so 1.8 L, in the 1.5–2.4 L band.
What reviewers say (out of 10)
Ratings marked * are from reviews and are not part of the trip score. They are reviewers' scores, not our own measurements. How we score
Comfort*
Reviewers' average 8/10How comfy it is, including for side sleepers.
4 reviews on comfort, e.g. "offers superior cushioning, even for side sleepers".
Stability*
Reviewers' average 6/10How well you stay on it without rolling off or bouncing.
4 reviews on stability, e.g. "The horizontal baffling creates a relatively stable sleeping surface".
Reviewers disagree on this.
In short
Good for
- Spring-to-autumn and mild-winter wild camps where a warm, thick mat at very low weight matters
- Long walks and multi-day trips where every gram and litre of pack space counts
Strengths
- Very warm for its weight: R 4.5 at about 370 g
- Packs to about the size of a 1-litre bottle
- Thick enough to feel comfortable on lumpy ground, and much quieter than the older XLite
- Comes with a pump sack, stuff sack and repair kit, and the valve lets you let a little air out to adjust firmness
Weaknesses
- Regular is narrow (51 cm, tapered): some reviewers slipped off the edge, so wriggly sleepers may want the Regular Wide
- Quieter than before but still rustles a little when you move
- Not warm enough on its own for proper winter ground or snow
- Slow to inflate with the pump sack (6 to 8 bagfuls) and slower to squeeze fully flat than mats with a dump valve
- Thick and long, so can touch the roof of a low or tapering tent
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.
ShowHide sources (11)
- Therm-a-Rest (Cascade Designs): NeoAir XLite NXT Sleeping Pad specifications
- OutdoorGearLab: Therm-a-Rest NeoAir XLite NXT review
- Live for the Outdoors: Therm-a-Rest NeoAir XLITE NXT review
- BBC Countryfile Magazine: Therm-a-Rest NeoAir XLite NXT Sleeping Pad
- CleverHiker: Therm-a-Rest NeoAir XLite NXT review
- UKClimbing: Therm-a-Rest NeoAir XLite NXT review
- SectionHiker: Therm-a-Rest NeoAir XLite NXT Sleeping Pad review
- grough: On test, Therm-a-Rest Neoair XLite NXT sleeping mat
- Steve Cleverdon: Therm-a-Rest NeoAir XLite NXT review
- Outdoor Life: Therm-a-Rest NeoAir XLite NXT, same comfort, more quiet
- Pack Your Tent: Therm-a-Rest NeoAir XLite NXT