Loading...

NeoAir® XTherm / XTherm MAX

More warmth per gram than any other air mattress in the world with the XTherm MAX providing even greater coverage.

The XTherm air mattress delivers the greatest warmth-to-weight ratio available in any air mattress by far, with a softer, textured no-slip fabric for better next-to-skin comfort and a quieter rest. Multiple, reflective ThermaCapture layers give the XTherm air mattress true four-season warmth without the weight or bulk usually found in a winter-worthy mattress. And now, the XTherm MAX delivers all the great features and benefits of the original XTherm in a full rectangular shape, providing added coverage and warmth for extreme temps and wider torsos. Stuff sack and repair kit included.

Price From:
$199.95
In stock
Find Online Find a Store

Inflating Your Therm-a-Rest® NeoAir Mattress

The XTherm air mattress delivers the greatest warmth-to-weight ratio available in any air mattress by far, with a softer, textured no-slip fabric for better next-to-skin comfort and a quieter rest. Multiple, reflective ThermaCapture layers give the XTherm air mattress true four-season warmth without the weight or bulk usually found in a winter-worthy mattress. And now, the XTherm MAX delivers all the great features and benefits of the original XTherm in a full rectangular shape, providing added coverage and warmth for extreme temps and wider torsos. Stuff sack and repair kit included.
  • Unmatched Warmth-to-Weight: Patent-pending, reflective ThermaCapture technology traps radiant heat while Triangular Core Matrix construction minimizes convective heat loss–all without the bulk, weight or durability issues of down and synthetic fills.
  • Excellent Comfort: 2.5” (6 cm)-thickness, soft-touch fabrics and baffled internal structure provide unrivaled stability and support.
  • Highly Packable: Free of bulky, conventional insulating materials, the XTherm mattress packs to the size of a one-liter water bottle.
  • Ultralight: Advanced materials and a tapered design reduce weight without compromising warmth.
  • NEW – XTherm MAX – All the performance of the original XTherm with added coverage for extreme temps and larger torsos.
USA*Built of the Finest U.S. and Global Materials
Regular L
Color Vapor MAX, Vapor Vapor MAX, Vapor
R-Value 5.7 5.7
Weight (Standard) 1 lbs 1 oz, 15oz 1 lbs 7 oz, 1 lbs 4 oz
Weight (Metric) 0.49 kg, 0.43 kg 0.64 kg, 0.57 kg
Width (Standard) 20 in 25 in
Width (Metric) 51 cm 63 cm
Length (Standard) 72 in 77 in
Length (Metric) 183 cm 196 cm
Thickness (Standard) 2.5 in 2.5 in
Thickness (Metric) 6.3 cm 6.3 cm
Packed dimension (Standard) 9 x 4.0 11 x 4.5
Packed dimension (Metric) 23 x 10 28 x 11
Top fabric type 30D rip HT nylon 30D rip HT nylon
Bottom fabric type 70D nylon 70D nylon
Core Nylon Nylon
Country of Origin USA*Built of the Finest U.S. and Global Materials USA*Built of the Finest U.S. and Global Materials

Documents and Instructions

Click here to download the Universal Therm-a-Rest Mattress Repair Instructions, including how to locate leaks and make repairs in the field or at home on any mattress model.

If you have further questions about repair or warranty, or would like to send your mattress to us for repair. In the U.S., please contact our Customer Service department at 1-800-531-9531. For worldwide service and repair contact information, please click here.

Should you find yourself without access to Therm-a-Rest Repair Kits, repairs can also be made using items commonly found at most outdoor gear shops. (Remember that for maximum effectiveness, ALL of the below repairs should begin with a clean and dry mattress. An alcohol swab is an ideal cleaner that dries fast.)

  • Small leaks not requiring a patch: A urethane-based glue should be used. Some popular brands are SeamGrip® and AquaSeal. Apply a small dab, large enough to completely seal the hole, and allow 24 hours for drying. If your mattress fabric is relatively smooth like the NeoAir or Trail mattresses, peel-and-stick bicycle tube patch kits are an option offering instant repair.
  • Larger holes and tears: All mattresses can be repaired with a self-adhesive fabric patch—like those used to repair jackets and tents. These are commonly found in outdoor gear shops. Cut the patch in a circle to generously cover the hole. Apply a small amount of urethane-based glue to the back of the patch and the area to be covered on the mattress. Apply patch and press firmly. Wipe away excess glue from edges and allow 24 hours to dry.

If you’re not comfortable making the repair yourself and have some time before your next trip, call our service department at 1-800-531-9531 for instructions on sending your mattress back for repair.

Video: Repair Your Therm-a-Rest Mattress

Yes. A Therm-a-Rest Valve Replacement Kit will replace all metal and plastic mattress valves. Instructions for the kit can be found here.

Repair Your Therm-a-Rest Mattress
Repair Your Therm-a-Rest Mattress

Roll the mattress up to force the water out of the open valve. If there is a lot of water, you may have to do this several times. Hang the mattress upside down with the valve open in a warm, dry place. It will take about three days for the mattress to dry out.

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.

Therm-a-Rest mattress care
Therm-a-Rest mattress care

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.

Choosing the Right Sleeping Bag: Part 1—Understanding EN Temperature Ratings
Learn about the EN 13537 Standard.
Read More
8 Things I Wish I Knew Before Running My First Ultra Marathon
Pro tips to make sure you finish your first ultra in style.
Read More
The Origins of the West Coast Heeler Pack
From office job to full-time adventurist, Dream Team member Alicia Erskine shares her origin story.
Read More
Willi
January 19, 2017
Yes, I would recommend this to a friend
Excellent ultra warm and ultralight mattress
I bought a couple of these right after the NeoAir X-Therm first came out. At first, I didn't think I'd like it, mainly due to the crinkly noise that the mattress makes when you lay on it and move around. It turned out that I couldn't hear it any way when my head was inside my sleeping bag hood, so not an issue. It was not only less than half the weight of my previous ThermaRest that I had been using, but also MUCH warmer. Amazing! Given that I mainly climb big mountains and go on skiing and winter expeditions in Alaska these days, this means sleeping on snow and ice a lot, and high "R" value is of importance. I still use two pads mainly as a backup, but I have gone to a much thinner and lighter smooth foam pad as well and so have dropped almost 2 pounds from my sleeping system! I have also found these pads much tougher and more durable than I imagined that they would be. I often sleep on the ground or morainal rocks without a tent or ground cloth of any kind when the weather is nice so I can admire stars and northern lights on demand. I have had zero problems with abrasion or punctures much to my surprise. The only problem I've had in several years of 200+ days per year of use is when I had an attack of the stupids and packed my pad next to my crampons in my expedition duffle (hey, did I say stupid?). Problem easily solved with a field repair with the recommended patch kit. I do have two minor problems to "complain" about: 1) The short size at around 48 inches long is no longer available. Despite my 6' 1" frame, I have always found that a short pad used with an empty backpack under the feet is a great way to save a lot of weight and bulk in sleeping systems. 2) For me, I have found that my aging back does better (no backache in the morning) if I do not blow the pad up too firm but leave a little softness in it--I guess that would fall under the category of user error rather than complaint. Anyway, great product but please bring back the short!
Joch428
December 27, 2016
Yes, I would recommend this to a friend
Best sleeping pad I have ever owned
For years I slept on a closed cell pad. Then I bought this for winter camping in Wisconsin for work in Wilderness Therapy. I have never been happier with any purchase. By and large the best pad, summer or winter.
Trail Beater
December 23, 2016
Yes, I would recommend this to a friend
Comfy and warm!
I've been using my XTherm now for about 1.5 years, from the bottom of the Grand Canyon to Mt. Rainier's Wonderland Trail. Whether on warm sand or cold snow, I have found this mattress to be very comfortable. I use the Thermarest NeoAir inflator to pump this up, and then give it several firm breaths of air to make this mattress solid. I do notice that the reflective barriers or whatever are inside the mattress makes a crinkly sound which is annoying to myself and those in the tent next to me, but none-the-less, I sleep well on this mattress which I say is worth every penny!