NeoAir® XTherm™ NXT Sleeping Pad

  • NeoAir® XTherm™ NXT Sleeping Pad | Neptune | Regular
  • NeoAir® XTherm™ NXT Sleeping Pad | Neptune | Regular
  • NeoAir® XTherm™ NXT Sleeping Pad | Stuff Sack (Regular Size Shown)
  • NeoAir® XTherm™ NXT Sleeping Pad | Neptune
  • NeoAir® XTherm™ NXT Sleeping Pad | Neptune
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Therm-a-Rest

NeoAir® XTherm™ NXT Sleeping Pad

$229.95
$229.95
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The best warmth-to-weight ratio of any sleeping pad ever made.
  • Best Warmth-to-Weight Ratio Ever: Refined Triangular Core Matrix™ construction and ThermaCapture™ technology deliver a cold-conquering 7.3 R-Value while a Regular size weighs just 15.5 oz (440 g).
  • Premium Comfort: A 3-inch (7.6 cm) thick profile and horizontal baffled structure delivers premium backcountry comfort while keeping the weight to a minimum.
  • Ultralight Durability: 70D nylon on the bottom withstands the wear and tear of extended expedition use, while 30D ripstop nylon on top keeps it light and packable.
  • WingLock™ Valve: Delivers fast one-way inflation and rapid deflation without giving up the ability to easily purge air while you lay on it for comfort micro-adjustments—even with gloves on.
  • Multiple Sizes: 3 size options allow you to get the XTherm NXT that is perfect for your sleep system.
  • What's Included:

    • ✓ Pump Sack

    ✓ Stuff Sack

    ✓ Field Repair Kit

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Description

With cutting edge Triangular Core Matrix™ construction and ThermaCapture™ technology, the XTherm NXT delivers a 7.3 R-value while weighing just 15.5 oz (440 g) in the Regular size. Put another way, the best warmth-to-weight ratio of any sleeping pad ever created. It’s warmer and thicker than the previous model, which is why the XTherm NXT cements the legacy of being the go-to sleeping pad for alpinists, mountaineers and extreme cold expeditions. At 3-inches thick, with horizontal baffles, all-night comfort and support are at hand, while 70D nylon on the bottom ensures the XTherm NXT holds up to extended expedition use. The WingLock™ Valve allows for rapid inflation and deflation but is also intuitive and easy to use in frigid weather when the gloves are not coming off. If reliable overnight warmth is the demand no matter how far the mercury dips and space in the pack is at a premium, there’s no finer sleeping pad than the XTherm NXT.

Tech Specs

Large Regular Wide Regular
R-Value 7.3 7.3 7.3
Weight 1 lb 4 oz (0.57 kg) 1 lb 3 oz (0.54 kg) 15.5 oz (0.44 kg)
Width 25 in (64 cm) 25 in (64 cm) 20 in (51 cm)
Length 77 in (196 cm) 72 in (183 cm) 72 in (183 cm)
Thickness 3 in (7.6 cm) 3 in (7.6 cm) 3 in (7.6 cm)
Packed Dimensions 11 in x 5 in (28 cm x 13 cm) 11 in x 5 in (28 cm x 13 cm) 9 in x 4.5 in (23 cm x 11 cm)
Top Fabric Type 30D Ripstop HT Nylon 30D Ripstop HT Nylon 30D Ripstop HT Nylon
Bottom Fabric Type 70D Nylon 70D Nylon 70D Nylon
What's Included Pump Sack, Stuff Sack, Field Repair Kit Pump Sack, Stuff Sack, Field Repair Kit Pump Sack, Stuff Sack, Field Repair Kit
Country of Origin Made in USA of US and Imported Materials Made in USA of US and Imported Materials Made in USA of US and Imported Materials
Color Neptune Neptune Neptune
SKU 14017 14016 14015

Video Gallery

FAQs and Documents

What is solution-dyed fabric?

Solution-dyed fabric uses pre-dyed fibers to minimize the water and energy required to color the fabric. This means that color, or pigment, is added to the material producing the completed fabric. Compared to conventional batch-dyeing—the process of dyeing already produced fabric— solution dyeing requires significantly less water and energy, reducing waste and carbon emissions.

Will the NeoLoft fit in my tent?

Check the floor dimensions of your tent to see if they will accommodate the extra width of a NeoLoft pad. Lengthwise, every NeoLoft size will fit in the typical backpacking tent.

The floor dimensions of most 2-person backpacking tents are typically 50-52 in (127-132 cm) wide by 88-90 in (223-229 cm) long. If your 2-person backpacking tent is 52 in (132 cm) wide, then it will fit two Regular Wides or two Longs, or one of each. If your 2-person backpacking tent is 50 in (127 cm) wide, two of the wider NeoLofts will bulge slightly against the sides, but it will easily fit one Regular Wide or Long and one Regular.

Why is the NeoLoft wider and longer than other pads even though they are the same size (Regular, Regular Wide, Large)?

A Regular Wide NeoLoft measures 26 in x 73 in (66 cm x 185 cm), whereas a Regular XLite™ NXT measures 25 in x 72 in (64 cm x 183 cm). The NeoLoft’s 3D construction utilizes a sidewall band that attaches the top and bottom fabric. The sidewalls bulge out a bit when inflated, adding a touch of extra length and width.

Is the NeoLoft™ a NeoAir® sleeping pad?

No it’s not; we borrowed the ‘Neo’ moniker due to similarities in the internal constructions of the NeoLoft and the NeoAir pads. The NeoAir uses Triangular Core Matrix construction and the NeoLoft has ContourCore Matrix construction.

What’s the difference between Triangular Core Matrix™ construction and ContourCore Matrix™ construction?

Optimized for industry-leading warmth-to-weight ratios, Triangular Core Matrix is used inside our lightest, most compact sleeping pads. ContourCore Matrix uses the same thermally efficient design (two stacked layers of triangular chambers that disrupt convective heat loss) but incorporates a more flexible urethane material that allows for a thicker pad and superior contouring support. It’s heavier and less compact but maximizes comfort.

How should I inflate my self-inflating pad the first time?

For best performance, inflate your self-inflating pad with air by breath or pump and sack and leave the mattress fully inflated for 2-4 hours before your first use.

How do I inflate my self-inflating pad during winter?

In freezing conditions, avoid breath inflating your self-inflating pad. The moisture from your breath can freeze inside the mattress. The mattress may self-inflate slower in cold weather. Use a pump sack or electric pump if the pad needs additional air.

How Does a Self-Inflating Sleeping Pad Work?

Self-inflating sleeping pads rely on the compressible and rebound-able open cell foam cores to self-inflate. The atmospheric pressure around the pad pushes air into the rebounding open cells when the valve is opened. Check out our blog post for more information.

How Long Should it Take for My Pad to Self-Inflate?

Generally, it takes 5-15 minutes for any of our self-inflating pads to inflate on their own. That 10-minute variance range is probably due to one of the following factors: core construction, trained compression, elevation and temperature. We find the most significant factor is trained compression (i.e. if your pad is new and has been factory rolled on the shelf for some time or stored rolled up for a few months). Check out our blog post to find out why.

Why Doesn’t My Self-Inflating Pad Inflate All the Way?

Self-inflation begins when the valve is opened and ends when equilibrium is reached between the atmospheric pressure outside the cells and the air pressure within the cells pushing the other way. In our experience, most users’ comfort level requires more air than the equilibrium level, which is why self-inflating pads don’t inflate “all the way.” Check out our blog post for more information.

How should I store my sleeping pad?

  • Self-Inflating: We recommend storing the mattress unrolled and fully inflated in a dry place with the valve open. This will ensure the foam self-inflates faster when camping. Storage for a prolonged time in a damp space may cause mildew damage which is not covered by our Limited Lifetime Warranty.
  • NeoAir: We recommend leaving the valve open and storing your mattress rolled tight in a stuff sack to protect it from dirt and sharp objects.

What is the best way to clean my sleeping pad?

Regular cleaning will extend the life of your mattress, especially if you sleep in direct contact with its surface.

Do not put your mattress in the washing machine. Cleaning with a hose or in a bathtub is best. Do not forget to close the valve while washing. For general cleaning, a quick scrubbing with Formula 409®, BioClean™ All-Purpose Cleaner, or other general household cleaner is best.

Watch the video: How to Care for Your Therm-a-Rest® Mattress

For tree sap, spot clean with a cotton rag soaked in rubbing alcohol. This will take some work and sap will likely leave a stain. However, a dusting with talc or baby powder when you are done should eliminate any residual stickiness.

What should I do if I think my sleeping pad is losing air?

If you think that your NeoAir or self-inflating sleeping pad are losing air, it’s possible that you have a puncture in your pad. If you want to repair your pad at home, check out this blog post. If you’d like to send your pad to our Seattle repair shop, head over to our warranty page.

How warm is my sleeping pad and what is the ASTM testing standard?

ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. While Therm-a-Rest has always used R-value to rate our sleeping pads, this new standardization will allow campers to make “like-for-like” comparisons with our competitors pad. Head to a blog for an in-depth explanation.

What is the benefit of stretch knit fabric on my sleeping pad?

For comfort-conscious campers, we use stretch knit fabric for unrivaled support and superior next-to-skin feel. The fabric conforms to your body to provide supple support as you enjoy your nights under the stars.

Can I replace the valve on my Therm-a-Rest mattress?

  • Yes. Classic Valve Replacement Kits can be purchased here.
  • WingLock™ Valve Replacement Kits can be purchased here
  • If you’re having issues with your TwinLock™ Valve, our warranty & repair team is here to help. Please visit thermarest.com/warranty for more info.
  • If you’re not sure which valve you have please refer to the graphic below:
    • Valve Type

How do you inflate and deflate sleeping pads with a WingLock™ Valve?

  • Watch this video for step by step instructions on how to use the WingLock™ Valve
  • To Inflate the WingLock™ Valve:
    • Unroll your sleeping pad and open the valve cap by twisting it counter-clockwise.
    • Use a pump sack or breath to inflate your pad. The one-way valve will prevent air from escaping.
    • Continue inflation until the mattress is fully inflated and close the valve by twisting the valve cap clockwise.
  • To Deflate WingLock™ Valve:
    • Open the wings to open the one-way valve.
    • Open the valve cap by twisting counter-clockwise, allowing air to escape
    • Roll the pad toward the valve end, pushing any remaining air from the pad.

Can I replace my old Therm-a-Rest valve with a new WingLock™ Valve or TwinLock™ Valve?

No. WingLock™ or TwinLock™ Valves cannot be installed on products that originally included a Classic Therm-a-Rest Valve. If you’re not sure which valve you have please refer to the graphic below:Valve Type

What makes the WingLock™ Valve different from Classic Therm-a-Rest Valves?

  • Faster Inflation: Larger valve opening and one-way inflation allows three times faster airflow than our classic valve (with a pressurized air supply the Classic Valve flow rate measures to 2.2 standard cubic feet per minute, where the WingLock Valve flow rate measures to 6.5 standard cubic feet per minute, or a 295% difference).
  • One-Way Inflation: Unique design keeps air from escaping during inflation.
  • Deflation “Wings”: When it’s time to break camp, open the valve and twist the wings to deflate your pad twice as fast as our classic valve.
  • Watch this video to learn more

What makes the TwinLock™ Valve different from Classic Therm-a-rest Valves?

For our larger pads, we developed the TwinLock™ Valve which utilizes two one-way valves: a one-way inflation valve and one-way deflation valve that allows for five times faster deflation than our classic valve. Watch this video to learn more.

How do you inflate and deflate sleeping pads with a TwinLock™ Valve?

  • Watch this video for step by step instructions on how to use the TwinLock™ Valve
  • To Inflate TwinLock™ Valve:
    • Unroll your sleeping pad and open the “IN” valve by twisting it counter-clockwise.
    • Use a pump sack or breath to inflate your pad. The one-way “IN” valve will prevent air from escaping.
    • When the mattress is fully inflated and close the valve by twisting the valve cap clockwise.
  • To Deflate TwinLock™ Valve
    • Open the “OUT” valve by twisting counter-clockwise.
    • The one-way “OUT” valve will keep air from flowing back into the pad.
    • Roll the pad toward the valve end, pushing any remaining air from the pad.

Shipping and Returns

Free Shipping on Orders over $50

We offer complimentary FedEx Ground shipping for orders over $50. Learn More

Orders Shipped in 1-2 Days

We do our best to get all orders out within one business day, Monday through Friday. Learn More

No Hassle Returns

We accept returns within 30 days of purchase. All returned items must be in new condition. Please be sure no dirt, grass or pet hair is on the item you are returning. Learn More

Limited Lifetime Warranty

Every piece of Therm-a-Rest gear is designed to endure the rigors of your time in the backcountry. We offer a Limited Lifetime Warranty on all products, except electronic devices, which have a 2-year Limited Warranty. Visit our Therm-a-Rest warranty page for more info.

Portrait of our repair shop crew

Overall rating: 4.158416 / 5 from 101 reviews.

AI Generated Review Summary

The NeoAir® XTherm™ NXT Sleeping Pad offers an exceptional warmth-to-weight ratio, making it ideal for cold weather backpacking and mountaineering. Customers praise its durability and warmth, though some have noted issues with air leakage and customer service. The pad's pump is easy to use, and the new version, while slightly heavier, includes a wide option that is highly recommended.

Summary topics

  • Pump (6%): Customers expressed differing viewpoints regarding the pump, with some finding it easy to inflate and adjust for comfort.
  • Product Improvement (6%): In general, customers found the improvement in the product to be significant improvement over previous versions.
  • Pad Durability (43%): Many customers stated that the pad is the most durable and warm sleeping pad they have ever used.
  • Product Version (9%): The feedback is varied, the new version is heavier by a half oz. However, the wide version is a MUST.
  • Weight (7%): It was noted by customers that this pad is a great choice for cold weather Backpacking-Mountaineering.

Review topics: [quality, customer service, bag, problem, size, weight, air, feels, improvement, performance, comfort, pad, warmth, width, model, valve, thickness, fit, version, sleep, mat, pump, upgrade, noise, works, xtherm, experience, mattress, packs, value].

Review highlights

  • "My weight is distributed along a larger section of pad, and thus the air is evenly distributed -- even side sleeping." — Andrew
  • "I love this sleeping pad, very good quality, easy to use, lightweight, and made in the USA." — Luke J.
  • "It far exceeded my expectations in terms of warmth, comfort, small weight, pack size, ans little noise." — Steffen W.

Reviews

Gold standard for winter pads

"Slept on the snow for over a week on this pad. Incredibly warm for the weight. Should’ve bought one sooner, makes winter camping far more enjoyable."

— Alessandro L. (5/5)

Excellent sleeping pad. Perfect size

"Excellent sleeping pad. Perfect size and thickness. Ease to inflate, strong valve and really liked the accessory bag it came with to pump it up. Looking forward to our trip this weekend on Vancouver islands west coast."

— Jay F. (5/5)

Good until it stops working

"Overall it's a fantastic sleeping pad, but the valve started to leak right after the pad's warranty span of two years, of course. It's now deflating up to 3 times over a 8hrs night. Patches are great for tears and holes from normal use over time, but valves are still a major weakness in the system."

— Yan (1/5)

Best lightweight sleeping pad I have used

"I started using ThermaRest pads when they first were invented in 1972. Cascade Designs has consistently worked to update and improve them over the years, and, in my opinion, these are the best yet. The have an impressively high R-value, are thick enough to be very comfortable, and are very tough and resistant to damage. The only real negative thing I have to say, is not about the quality of the pad at all, just the sizing available. If one is looking to pack as absolutely light as possible, I actually prefer the small size pads that Cascade Designs offered when they first came out with the NeoAir. They were about 48 inches long, and were perfectly adequate. I am 6' 1" and I prefer the older, lighter, smaller pads! I simply throw my empty pack under my feet, and use extra clothes and gear for my pillow, the the 48" length is plenty long for my torso. This saved me significant weight and bulk. I've use this pad for many backpacking and ski trips in Alaska, as well as climbing Denali, Mt. Logan, and multiple 8,000-meter peaks in the Himalaya. Unfortunately, I wore it out and now need to make-due with the much larger and heavier "regular" size, rather than the "short" that used to be available. Please, Cascade Designs, bring back the "short" version of this NeoAir pad! But for now, I will be forced to use a pad that is 1/4 the bulk and 1/6 the weight of my original ThermaRest. Poor me!"

— Willi P. (5/5)

Exceptional Warmth and Comfort

"I've been using Therm-a-Rest sleeping pads for over 43 years, so it's safe to say I'm a loyal fan. After spending time with the NeoAir XTherm NXT, I'm an even bigger one. I've used this pad on numerous backpacking trips, as well as on a backcountry ski touring expedition in Kyrgyzstan. It has consistently kept me warm, even in cold conditions, while remaining incredibly lightweight and compact. When every ounce and every inch of pack space matters, this pad shines. It rolls up easily and fits neatly into an already crammed backpack, making packing quick and hassle-free. The comfort, warmth, and packability of the NeoAir XTherm NXT are exceptional. It's become one of my favorite pieces of gear, and I wouldn't hesitate to recommend it to anyone looking for a high-performance sleeping pad. Once again, Therm-a-Rest has knocked it out of the park!"

— Amy C. (5/5)

"The gold standard when it comes to low weight and high r-value. I have both this version and the rectangular Max version. Love them both."

— ROBERT (5/5)

Best sleeping pad ever, and

"Best sleeping pad ever, and I've used a lot of different sleeping pads over the las 37 years."

— Aaron M. (5/5)

Best customer service. Ever.

"The NeoAir XTherm NXT is hands-down my favorite sleeping pad: insanely warm for the weight and super comfortable. I had a minor issue and contacted Cascade Designs Repairs, they not only explained everything clearly, but they also identified delamination during their assessment and arranged a free replacement. Exceptional customer service and a product I’m truly happy to recommend."

— Carolina M. (5/5)

Hello, I didn’t try it

"Hello, I didn’t try it yet. Heading to Kilimandjaro next Monday so, remind me in 2 weeks for a review :). But I don’t think xterm gona be a deceptive item :)"

— Mathieu L. (5/5)

Perfect performance

"Really incredible performance for the package size. Slept at -15 didnt feel any cold from the ground"

— Julien G. (5/5)

Q&A