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Nemo Tensor All-Season Backpacking Sleeping Pad Review

Delaney Miller bio photo
ByMultiple Authors

Updated:

Jan 21, 2025
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Our Take:
4.8/5
Editors' Pick
Certified

The Nemo Tensor All-Season ($220 for the regular rectangular version we tested) is everything you can hope for in a three-season-plus pad: It’s comfy (we particularly love the square baffles), thick, packable, and warm enough for everything up to moderate winter conditions. At 1 pound, it’s not the most lightweight pad in its warmth class, but many backpackers will take the ounce-hit for the boost in comfort. As a result, it’s one of our favorite all-rounders.

Comfort

Comfort

4/5
Warmth / Weight

Warmth / Weight

4.5/5
Packed Size

Packed Size

4/5
Durability

Durability

3/5
Ease of Use

Ease of Use

4/5
Sustainability

Sustainability

4.1/5

Type

Air

R-value

5.4

Weight

15.5 oz.

Packed Size

10 x 4 in.

Thickness

3.5 in.

Fabric(s)

20D/40D nylon

Pros

Suitable for most year-round adventures, except perhaps deep winter camping at high elevations.
Comfortable and less noisy than the competition.
Fairly durable materials for a lightweight pad.
Super-fast inflation thanks to the included and impressively efficient pump sack.

Cons

Not as light as the Therm-a-Rest NeoAir XLite NXT (but warmer and more comfortable).
Due to being on top of the pad, the valve is prone to popping open accidentally.

For this season's top models, see our guide to the Best Backpacking Sleeping Pads.

In addition to all seasons, the Nemo Tensor All-Season’s comfort is dialed for all campers. The pad’s 3.5 inches of loft deliver Goldilocks comfort and stability—it’s enough height to keep you off the ground, even if you’re a side-sleeper, but not so high that you feel like you’ll tip off. Nemo’s proprietary boxed baffle design also helps in this regard, distributing weight evenly and eliminating the bounciness you get with some other pads. We’ve found that the baffles also hug the body better than vertical or normal baffles; one Better Trail tester says that he felt the pad wanted to push him off less than traditionally horizontally baffled Therm-a-Rest models.


The Nemo Tensor All-Season is also fairly quiet, without the distinct potato-chip-bag sound many backpackers have come to fear. Sure, it’s likely noisier than your mattress at home, but is still quieter than many backpacking sleeping pads on the market. The fabric does have a bit of a plasticky feel, but we never felt uncomfortable or like we were sticking to it. All in all, the Tensor All-Season is one of the most comfortable pads we've tested, and it’s especially impressive when you factor in its low weight.

Weighing in at 1 pound (including its stuff sack and pump sack) and with an R-value of 5.4, the Tensor All-Season’s warmth-to-weight ratio is one of the best on the market. It’s warm enough that you can use it for snow camping while maintaining a decently streamlined weight and packed size. However, the Tensor All-Season is outmatched by the Therm-a-Rest NeoAir XTherm NXT, which offers a 7.3 R-value and weighs even less (15.5 oz. vs. 1 lb.). And in terms of warmth, you can step up big with Nemo’s Tensor Extreme Conditions (8.5 R-value), which is designed for sleeping in sub-zero conditions when paired with the right sleeping bag, of course. But the XTherm and Tensor Extreme cost $40 and $50 more, respectively, and the All-Season is plenty warm enough for most adventurers without being overkill for summer backpacking.


To achieve the All-Season’s impressive warmth-to-weight ratio, designers placed two layers of metallic film inside the pad’s baffles. This construction effectively reflects body heat while keeping weight low. During a four-day backcountry ski trip in Wyoming’s Wind River Range, the All-Season kept one tester warm as temps dipped into the mid-teens at night (he layered the pad over a closed-cell Therm-a-Rest Z Lite Sol, which has an R-value of 2.0). Another tester, on a June backpacking trip in Norway, had no complaints about the pad with temps in the 40s and snow on the ground. In the end, we’d guestimate that the Nemo Tensor All-Season’s limit without an auxiliary pad underneath is about 20 degrees.

When packed in its stuff sack, the Nemo Tensor All-Season is about the size of a Nalgene (10 in. by 4 in.), a praiseworthy size for a pad with this level of warmth and comfort. For comparison, the Therm-a-Rest NeoAir XLite packs down a bit smaller to 9 inches by 4.1 (but has an R-value of 4.5) and the Big Agnes Rapide SL rolls up to 7 inches by 4 inches (and has an R-value of 4.8). For the vast majority of backpackers, the packed size for the Tensor All-Season is perfectly reasonable. Nemo includes a stuff sack, but you can dump the weight (and the hassle of stuffing your pad inside) and instead secure the rolled pad with an included strap.

With its 20-denier nylon top fabric and 40D nylon base, the Tensor is relatively durable. As with warmth, it’s not elite—the NeoAir XLite is 30D on both its top and bottom and an ounce lighter, and the legendarily tough NeoAir XTherm NXT has a 70D(!) base—but the Tensor offers a competitive balance of durability and weight. For another comparison point, the Sea To Summit Ether Light XT also has a 30D top and 40D bottom, but it’s less insulating (3.2 R-value) and about an ounce heavier.


While previous iterations of the Tensor were plagued with baffle failures that caused them to leak, Nemo seems to have figured out the problem. In the wild, our time with the updated Tensor All-Season has matched its specs, more or less. One Better Trail editor—who usually camps in laughably rugged terrain—noted that that the Tensor survived use on open ground strewn with small rocks without any ill effect. For a lightweight model, the backpacking sleeping pad offers above-average durability.  

The Tensor’s included pump sack makes inflation a breeze (with a caveat). Simply attach the sack to the pad’s inflation valve and push in four to five bags worth of air, and the pad is ready to go. This sounds easy peasy, except for one thing: Because the inflation and deflation settings are incorporated into one valve, it’s easy to also pull up the deflation part of the valve when removing the pump sack, thereby deflating the pad. You can avoid this once you get used to it, but for us the learning curve required several annoying inflation/deflation mishaps. We’ve also accidentally opened the deflation valve while lounging on our pad (grazing it with our shoulder or elbow), which is a deflating feeling to say the least. These mishaps would not occur with a valve like Therma-a-Rest’s, which is on the edge of the pad and twists firmly closed.

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Longevity

Choosing durable outdoor gear and keeping it in use for longer is one of the best ways to reduce environmental impact. Our proprietary longevity rating assesses factors like overall build quality, materials, fabric denier, component durability, and real-world performance. A green check indicates that we expect the product to be long-lasting relative to its peers, a yellow check mark indicates average longevity, and a red X indicates a product that may have a limited lifespan.

The Nemo Tensor All-Season is available in four variations: regular rectangular and regular mummy (both of which measure 72 by 20 in.); regular wide (72 by 25 in.); and long wide (76 by 25 in.). Our tester deemed the regular version a great fit for her 5’6” frame. Another 6’3” tester tested the long wide version and reported that it felt luxuriously roomy.

Therm-a-Rest NeoAir XLite NXT ($210): A Lighter Three-Season Standout
Along with the Tensor All-Season, the NeoAir XLite NXT is one of our favorite all-around pads. The main tradeoffs you’ll make in choosing one over the other concern weight and warmth: The NeoAir is lighter (13 oz. vs. 1 lb.) and packs down smaller, but with a 4.5 R-value it’s only insulated enough for three-season backpacking. However, its more streamlined design makes it a better option for weight- and space-conscious hikers who stick to fairly “normal” hiking conditions. Some other points to consider with the NeoAir XLite are that it gives up half an inch of thickness (3 in. vs. 3.5 in.) and features horizontal baffles, which we haven’t found to be as comfortable as the Tensor’s box baffles. We also like the NeoAir’s valve better, but its pump sack isn’t as efficient. For more, read our review of the NeoAir XLite.


Nemo Tensor  Extreme Conditions ($260): For Winter’s Worst
If you want even more warmth for your winter camping sleep system, the All-Season’s more insulated cousin is a good place to start. The Tensor Extreme Conditions boasts an R-value of 8.5, which makes it primed for adventures as frigid as a Denali expedition. Once you get past the cost ($40 more than the All-Season), the Extreme Conditions doesn’t even make many concessions: It has the same packed size as the All-Season and weighs only 2 ounces heavier. The baffle design and thickness on both pads are the same as well. However, the Extreme Conditions is overkill for backpackers who only get out in three-season conditions. Stick with the All-Season if high altitude and deep-winter temps aren’t in your future. For a deeper dive, read our Nemo Tensor Extreme Conditions review.


Big Agnes Rapide SL Insulated ($150): Comparable Performance on a Budget
For a more affordable pad with only a few compromises, check out the Big Agnes Rapide SL Insulated. The Rapide SL doesn't come in a mummy version, but its standard rectangular size is just 2 ounces heavier than the regular mummy Tensor All-Season and has a competitive 4.8 R-value. Like the Tensor, it's 3.5 inches thick and features boxed baffles, but it adds the benefit of 4.25-inch-thick side rails that protect you from sliding off the pad. With two valves, the Rapide SL is a bit easier to inflate/deflate, although that means an additional failure point compared to the one-valve Tensor. And it lags behind in user-friendliness: We struggled mightily to pack this pad into its stuff sack, which is a bummer when breaking down camp. Still, this pad presents fantastic value for those who don't venture out in below-freezing conditions. For more, read our review of the Rapide SL Insulated.

Nemo Tensor All-Season ($220)
Placing the Nemo Tensor All-Season sleeping pad into the tent
4.8/5

We think the Nemo Tensor All-Season is the best all-around backpacking pad on the market. It lies at a near-perfect nexus of weight, cushion, and warmth. However, it’s a bit too heavy for militant ounce-counters.

Type
Air
R-value
5.4
Weight
15.5 oz.
Packed Size
10 x 4 in.
Thickness
3.5 in.
Fabric(s)
20D/40D nylon
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Comfort

4/5
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Warmth / Weight

4.5/5
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Packed Size

4/5
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Durability

3/5
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Ease of Use

4/5
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Sustainability

4.1/5
Therm-a-Rest NeoAir XLite NXT ($210)
Close up of the Therm-a-rest Neo Air XLite Sleeping Pad thickness
4.7/5

A thru-hiker’s dream, this top-shelf pad boasts fantastic warmth for just 13 ounces. The NeoAir XLite NXT is versatile, easy to inflate, and less noisy than its predecessor. Comfort is the only area where it doesn’t excel.

Type
Air
R-value
4.5
Weight
13 oz.
Packed Size
9 x 4.1 in.
Thickness
3 in.
Fabric(s)
30D nylon
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Comfort

3/5
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Warmth / Weight

4.5/5
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Packed Size

4/5
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Durability

3/5
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Ease of Use

3.5/5
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Sustainability

2.3/5
Nemo Tensor Extreme Conditions ($260)
Carrying inflated Nemo Tensor Extreme Conditions Sleeping Pad
4.6/5

A cold-weather take on Nemo’s Tensor design, the Tensor Extreme Conditions is built for winter backpacking, ski touring, and high-altitude or Arctic travel. It delivers exceptional warmth at an impressively low weight, and the comfort of Nemo’s box-baffle construction is hard to beat in a true four-season pad.

Type
Air
R-value
8.5
Weight
1 lb. 2 oz.
Packed Size
10 x 4.5 in.
Thickness
3.5 in.
Fabric(s)
20/40D nylon
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Comfort

4/5
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Warmth / Weight

5/5
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Packed Size

4/5
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Durability

3.5/5
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Ease of Use

4/5
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Sustainability

4.9/5

Is the Tensor All-Season for You?

The Nemo Tensor All-Season is truly a one-quiver pad for most backpackers. It’s among the most comfortable we’ve tested, and its warmth-to-weight ratio make it versatile for everything from weight-conscious summer trips to overnight ski tours in the spring. Ease of use is high thanks to the included pump sack, although the inflation/deflation valve does have a bit of a learning curve. You can save a few ounces with a pad like the Therm-a-Rest NeoAir XLite, but the compromise is a bit of warmth and, in our opinion, a significant amount of comfort. Unless you’re a militant ounce-counter or head out in winter conditions, the Tensor All-Season is the best all-around sleeping pad on the market.

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