Therm-a-Rest XTherm NXT vs Exped Ultra 5R

Winter sleeping pads operate in a different universe from three-season pads. When you are sleeping on snow at 10F, R-value is not a nice-to-have; it is the line between sleeping and shivering. The Therm-a-Rest XTherm NXT and Exped Ultra 5R are the two pads that dominate this conversation, and they represent fundamentally different design philosophies.

The XTherm prioritizes warmth-to-weight ratio above everything else. The Exped Ultra prioritizes comfort and silence. Our recommendation: the XTherm is the better cold-weather pad for most winter campers because warmth is the variable that matters most when conditions are harsh. But the Exped is the better four-season pad for people who also use it in milder conditions. Let us dig into why.

The Numbers

Spec Comparison

Sea to Summit Camp PlusBig Agnes Divide InsulatedKlymit Double V Sleeping PadExped Dura 5RNemo Eclipse All-SeasonSea to Summit Ether Light XR Insulated Air Sleeping PadSea to Summit Ether Light XR Pro Insulated ASCSea to Summit Ether Light XR Pro Insulated Air Sleeping PadSea to Summit Ether Light XT InsulatedREI Co-op Flash Insulated AirZenbivy Flex Air MattressNemo FlyerNemo Flyer Self-InflatingRab Hypersphere Ultra 7.5 DownKlymit Insulated Static VKlymit Insulated Static V LiteKlymit Insulated Static V LuxeKlymit Insulated Static V Peak Sleeping PadKlymit Insulated V Ultralite SL Sleeping PadExped MegaMatTherm-a-Rest NeoAir Topo LuxeTherm-a-Rest NeoAir VentureTherm-a-Rest NeoAir XLite NXTThermarest NeoAir XLite NXT Sleeping PadTherm-a-Rest NeoAir XLite NXT Women'sTherm-a-Rest NeoAir XTherm NXTThermarest NeoAir XTherm NXT Sleeping PadThermarest NeoLoft Sleeping PadTherm-a-Rest Prolite PlusNemo Quasar 3D InsulatedTherm-a-Rest RidgeRestKlymit Static VKlymit Static V Short Sleeping PadKlymit Static V Summit Double Sleeping PadKlymit Static V Summit Sleeping PadKlymit Static V2Klymit Static V2 Sleeping PadRab Stratosphere 4Nemo TensorNEMO Equipment Tensor All-Season Insulated Sleeping PadNemo Tensor EliteNEMO Equipment Tensor Elite Sleeping PadNemo Tensor Extreme Conditions InsulatedNEMO Equipment Tensor Extreme Insulated Sleeping PadNemo Tensor TrailNEMO Equipment Tensor Trail Sleeping PadNemo Tensor Trail Ultralight InsulatedGossamer Gear Thinlight 1/8 Foam PadTherm-a-Rest Trail LiteTherm-a-Rest Trail ProTherm-a-Rest Trail ProLiteExped Ultra 1R Sleeping MatExped Ultra 5RExped Ultra 6.5RExped Ultra 6.5R Duo Sleeping MatExped Ultra 6.5R Mummy Sleeping MatExped Ultra 7R Sleeping MatKammok UltralightZenbivy Ultralight MattressBig Agnes Zoom UL Insulated

R-Value

4.3

4

—

4.8

6.2

—

7.4

—

3.2

3.7

—

3.3

3.3

7.3

4.4

4.4

5

4.2

—

9.5

3.7

2.2

4.5

—

4.5

7.3

7.3

—

3.9

3.3

2

1.3

—

—

—

1.3

—

3.8

3.5

5.4

2.4

—

8.5

8.5

2.8

2.8

2.8

0.5

3.2

4.4

2.4

—

4.8

6.9

—

—

—

7.2

4.5

4.3

Weight (oz)

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

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—

—

—

—

—

—

—

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—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

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Thickness (in)

3

3.3

—

3

3

4

3.9

—

4

2

—

2

2

3.2

2.5

2.5

3

—

—

3.9

4

2

3

—

3

3

—

4.6

1.5

3.5

0.5

2.5

—

—

—

2.5

—

3

3.5

—

3

—

3.5

—

3.5

—

3.5

0.1

1.5

3

1

2.8

3

3.5

—

—

—

3.4

3

3.3

Price ($)

99.95

129.95

—

—

297.89

—

271.98

—

—

—

—

119.95

138.49

271.98

99.95

79.86

149.95

—

—

—

149.95

—

198.5

—

209.95

269.95

—

—

104.95

104.51

—

49.95

—

—

—

—

—

72.17

179.95

—

229.95

—

249.95

—

—

—

189

24.97

79.95

129.95

139.95

—

—

200

—

—

—

159

89.99

180

Spec	XTherm NXT	Ultra 5R	Delta
R-Value	7.3	5.0	+2.3
Weight (regular)	15.5 oz	17.3 oz	-1.8 oz
Thickness	2.5 in	3.0 in	-0.5 in
Width (regular)	20 in	20 in	Even
Price	$240	$230	+$10
Fabric (top)	30D rip nylon	20D rip nylon	+10D
Insulation	ThermaCapture reflective	Synthetic microfiber	Different

Not enough data for side-by-side comparison.

Warmth: XTherm Dominates

An R-value gap of 2.3 is massive. To put it in context: that is roughly the difference between a summer foam pad and a three-season inflatable. The XTherm’s R-value of 7.3 means it can handle sleeping on snow in single-digit temperatures as a standalone pad. The Ultra 5R at 5.0 handles frozen ground and cold nights into the teens but needs supplemental insulation (a foam pad underneath) for true winter conditions.

The XTherm achieves this through Therm-a-Rest’s ThermaCapture reflective layer, which reflects radiant heat back toward the sleeper. Independent testing consistently validates the 7.3 figure. The technology works.

No R-value data available for these products.

Weight: XTherm Wins Again

The XTherm is both warmer and lighter. At 15.5 oz versus 17.3 oz, it saves 1.8 oz while providing 46% more insulation. The warmth-to-weight ratio is not close: the XTherm delivers 0.47 R-value per ounce versus the Ultra 5R’s 0.29. On this metric alone, the XTherm is the clear winner.

Comfort: Exped Takes It

The Ultra 5R fights back on comfort. Its 3.0-inch thickness and microfiber fill create a softer, more cushioned sleeping surface. Exped’s vertical baffle design produces less of the hammock effect that some sleepers find uncomfortable in the XTherm’s triangular core.

The bigger comfort factor is noise. The XTherm, like all NeoAir pads, produces some crinkle noise when you shift positions. The Ultra 5R is significantly quieter, approaching the silence of a foam pad. In a winter tent with a partner, the noise difference is noticeable.

Durability: Slight Edge to XTherm

The XTherm’s 30D face fabric is thicker than the Ultra 5R’s 20D. In winter conditions, where the pad contacts ice crystals, frozen ground, and stiff tent floors, the thicker fabric provides a measurable durability advantage. Both pads are still inflatable and vulnerable to punctures, but the XTherm tolerates rough handling better.

The Contrarian Case for the Ultra 5R

Here is what the spec comparison misses: most people buying a “winter” pad do not exclusively use it in winter. The Ultra 5R’s R-value of 5.0 handles every three-season night and extends into cold weather with a foam pad supplement. Its comfort and noise profile make it pleasant to use year-round. The XTherm, with its crinkle and thinner profile, is purpose-built for cold and feels like overkill on a 50F September night.

If you own one pad for all conditions, the Ultra 5R is more versatile. If you already have a three-season pad and want a dedicated cold-weather option, the XTherm is the superior specialist.

Who Should Buy the XTherm NXT

• Dedicated winter campers and mountaineers
• Anyone sleeping on snow regularly
• Weight-conscious cold-weather backpackers
• People who already own a three-season pad

Who Should Buy the Ultra 5R

• Four-season backpackers who want one pad for everything
• Comfort-priority campers in cold conditions
• Noise-sensitive sleepers and tent sharers
• Side sleepers who need the extra half-inch of thickness

Winner Matrix

When to Buy Which

Camp Plus: 0 wins | Divide Insulated: 0 wins

Buy Camp Plus if...

No clear advantages in compared specs.

Buy Divide Insulated if...

No clear advantages in compared specs.

The Verdict

We recommend the XTherm NXT for winter-specific use. Its warmth-to-weight ratio is unmatched, and when temperatures drop below 20F, that margin matters. We recommend the Ultra 5R as a four-season daily driver for people who want one pad instead of two.

The worst choice is buying the Ultra 5R thinking it is a winter pad and getting cold on snow. Know your use case, match the R-value to your conditions, and use our R-value guide to understand what you actually need.

For the broader sleeping pad landscape, see our 2026 roundup. For the three-season equivalent of this comparison, read our XLite vs Tensor head-to-head.

Frequently Asked Questions

Can I use the XTherm in summer?

You can, but it is overkill. The R-value of 7.3 means you will sleep warm in any conditions, but you are carrying insulation you do not need. The XTherm also runs warmer and slightly noisier than pads designed for three-season use. A dedicated three-season pad like the XLite NXT (R-4.5, 12.5 oz) saves 3 oz and performs better in warm weather.

Is an R-value of 5.0 enough for winter camping?

It depends on conditions. For sleeping on frozen ground with temps in the teens, R-value 5.0 is adequate for most people. For sleeping directly on snow in single-digit temperatures, you want R-6.0 or higher. Stacking the Ultra 5R (R-5.0) with a foam pad (R-2.0) gives you roughly R-6.5 to R-7.0, approaching XTherm territory.

Which pad is quieter?

The Exped Ultra 5R is significantly quieter. The XTherm uses a reflective layer that creates rustling noise when you move. The Ultra 5R’s microfiber fill produces almost no sound. If noise is a priority, the Ultra 5R wins this category decisively.

Are there cheaper winter sleeping pad options?

The Exped Dura 5R offers similar R-value (5.0) with much thicker fabric (70D) at a lower price, but weighs significantly more (27+ oz). Budget winter options are limited because high R-value requires expensive materials and construction. Stacking a $35 foam pad under a mid-range inflatable is the most cost-effective cold-weather strategy.

How do I prevent my inflatable pad from deflating in cold weather?

Cold air contracts, so inflatable pads lose pressure overnight in freezing temperatures. This is normal and not a leak. Top up your pad after lying down, once the air has cooled to ambient temperature. Both the XTherm and Ultra 5R handle this the same way. Blow-up before bed, add a few breaths after settling in.