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Nemo Quasar 3D Insulated Sleeping Pad Review

Jude Glenn bio photo
Eli Bernstein bio photo
ByMultiple Authors

Updated:

Jan 21, 2025
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Our Take:
4.3/5
Certified
The Nemo Quasar 3D Insulated ($160) offers a compelling mix of durability, comfort, ease of use, and price—a rare combo in the air pad market. It's not a very warm pad, though, especially when you factor in its just-light-enough-for-backpacking weight. Even so, its long-lasting build and contoured baffles—which earned universal praise from our testing team—make it a model that can pull double-duty for summertime backcountry use and as a car camping pad.
Comfort

Comfort

4/5
Warmth / Weight

Warmth / Weight

2.5/5
Packed Size

Packed Size

4/5
Durability

Durability

4/5
Ease of Use

Ease of Use

4/5
Sustainability

Sustainability

5/5

Type

Air

R-value

3.3

Weight

1 lb. 9 oz.

Packed Size

8 x 4.5 in.

Thickness

3.5 in.

Fabric(s)

30D PU polyester

Pros

3.5-inch thickness is ideal for side-sleepers and campers who want plenty of cushion.
Pad design cradles sleepers in the middle, preventing slippage.
Easy-to-use pump sack inflates the pad in less than four bag-fulls.

Cons

Low R-value means it’s not ideal for anything other than moderate temps.
Heavy considering its relatively low R-value.
One-piece valve system is finicky and can accidentally pop open.

Editor's note: Nemo discontinued the Quasar 3D, but around the same time introduced a compelling pad in the new-for-2026 Nemo Eclipse All-Season. To learn more about the Eclipse and the rest of this season's top models, see our guide to the Best Backpacking Sleeping Pads.

Simply put, the Nemo Quasar 3D is one of the most comfortable pads we tested. Its 3.5-inch thickness is above average for the category, and a win for side-sleepers or luxury-oriented campers in general: The Quasar is the type of pad that prevents your hips from hitting the ground even when you shift your weight around. Comfort is further boosted by the pad’s unique construction, in which the horizontal baffles angle ever-so-slightly inwards towards the middle. This design cradles your body and keeps you centered throughout the night, and we actually prefer it to the raised side rails featured in other pads (such as some Big Agnes models); we’ve found that rails can be excessively high and press into the shoulders or hips. In contrast, the Quasar 3D keeps you centered without you noticing.


Nemo leaned into a luxe mindset with the Quasar’s small touches as well. A slightly raised baffle at the top helps with keeping your pillow from sliding off the pad and slightly elevates your head in the event that you forget a pillow altogether. It’s not so tall to be an annoyance, but enough to make a difference. The polyester fabric isn’t noisy either, with no metallic-sounding crinkle like some other sleeping pads. Finally, a rectangular shape in the “regular” version is a nice step up from a mummy-shaped pad if that’s what you’ve been sleeping on. (Nemo also offers the Quasar 3D in wide, long, and even a double-wide size.) Sleeping pad comfort can come down to personal preference, but the Nemo Quasar 3D is pretty much universally enjoyed; in fact, this is the first air pad one Better Trail editor reaches for on comfort-oriented car camping adventures.  

The Quasar 3D’s warmth-to-weight ratio is probably its weakest trait. The vast majority of the backpacking pads we tested fall somewhere around the 1.5-pound mark or below; in contrast, the Quasar’s 1-pound-9-ounce weight is near the upper limit of what we’d consider carrying into the backcountry. And, while a heavy pad is reason enough to grumble, the Quasar pairs that with a disappointingly low 3.3 R-value, which is only enough insulation for warm summer weather. A case in point: On a mild October trip into Washington’s Alpine Lakes Wilderness, one Better Trail member slept on the Quasar on a night when temps dipped into the low 40s. Even though he was using a 20-degree quilt, he felt the dreaded sensation of cold passing from the ground up through the pad the minute he laid down and ended up searching for extra insulation. 


For reference, the Quasar 3D lags far behind standout pads in the category such as the Therm-a-Rest NeoAir XLite NXT (13 oz., 4.5 R-value) and the Nemo Tensor All-Season (1 lb. 1 oz., 5.4 R-value). Both of those pads are much lighter and warmer—and, yes, more expensive—and are better picks for backpackers who don’t want to overload themselves but still want enough warmth to sleep comfortably when the leaves start to turn. And even the Sea to Summit Ether Light XT, which has a similarly warm weather-oriented R-value of 3.2, is much lighter than the Quasar 3D at 1 pound 1.3 ounces. Summed up, if keeping your base weight down and/or maxing out warmth is a priority, there are other pads you should choose.

Rolled away into its stuff sack, the Nemo Quasar 3D measures 8 inches by 4.5 inches, which is quite respectable given its weight and plenty reasonable for fitting into a backpacking pack. It’s also in line with the rest of the air pad category: The NeoAir XLite packs down to 9 inches by 4.1 inches, and the Tensor All-Season scrunches to 10 inches by 4 inches. The Quasar is shorter but slightly wider than both of those pads when packed away, but it’s much more compact overall than the Therm-a-Rest Trail Pro, a self-inflating pad, which measures 11 inches by 8.8 inches. (We’ve also found that it’s easy to pack the Quasar into its stuff sack, which isn’t true for every pad.) While there are reasons to hesitate about taking the Quasar on a backpacking trip, the ability to cram it into your pack shouldn’t be one of them.

This is a pad made for the long haul. Nemo designed the Quasar 3D with thick, 30-denier PU polyester material that’s noticeably more durable than the fabric found in most air pads (which usually use a nylon construction). Collectively, the Better Trail team has put two versions of the pad through 30+ nights of use in some of the most demanding conditions available—camping with children and a dog—and has yet to experience a failure. While a 30D fabric doesn’t stand out on paper (many air pads fall between 20D and 40D), it feels much more substantial than that in hand. As with any air pad, it’s wise to treat the Quasar with care, but its reliability over our multi-year testing period is a testament to its resilience.  

Nemo’s designers ensured that setting up the Quasar 3D is about as easy as it gets for an air pad. We’re big fans of the included pump sack, which takes about two breaths to fill and, in our experience, approximately 3.5 bags full to fully inflate the pad. This process takes only a few minutes, and involves minimal huffing and puffing. The shape of the pump sack itself helps with efficiency, with a narrow opening at the top that doesn’t let air seep out as you compress it. 


The Quasar is also easy to fit back into its sack; when you fully open the one-way valve to release air it releases immediately, and then it’s the simple tasks of rolling, folding in thirds, and stuffing it away. (The pad comes with a Velcro strap to secure its rolled shape, but we don’t think it’s mandatory to use.) We also appreciate the inflate/deflated instructions that are included in the stuff sack—helpful for folks just getting into backcountry camping—as well as the small sleeve in the stuff sack that holds the Quasar’s repair patches.  


Our only real complaint with the Quasar’s setup system is that its one-way valve can be somewhat difficult to operate. When opening the top half of the valve for inflation you have to be careful to not take the bottom piece with it or it will release all of the air. It also takes some practice to cleanly release the pump sack from the valve after you’re done inflating (again, lest you undo all of your inflation efforts). Overall, though, this is quite a user-friendly sleeping pad.

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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 Quasar 3D is available in a wide variety of sizes, ranging from its regular rectangular shape (72 in. by 20 in.) to a wide size (25 in. wide) to a long wide (76 in. by 25 in.) and even a double-wide model (76 in. by 52 in.). Both of our testers—one five-foot-five, the other five-foot-nine—found that the regular size offered plenty of room, even if you tend to roll around or sleep on your side. And of course, rectangular pads are always a bit more accommodating than those with mummy silhouettes.

Sea to Summit Ether Light XR ($199): Different Baffle Design, Lighter WeightThis pad is another comfort-centric model. The Ether Light XR is even thicker than the Quasar 3D Insulated, with 3.9 inches of boxed baffles that are a side-sleeper’s dream. Although it doesn’t have the Quasar’s curvature, the Ether Light’s smart baffling design is one of the comfiest we’ve slept on. Its diamond-shaped center baffles are smaller than the larger air cells on the outside of the pad; just like the Quasar, this effectively cradles your body and allows you to sink right in. The Ether Light comes out far ahead of the Quasar in weight (16.1 oz.), but its 30-denier nylon top and 40-denier nylon bottom can’t match the latter’s polyester fabric for resilience. And then there’s the price: At $39 more, this pad is probably only worth buying over the Quasar 3D if you’re a backpacker focused on making miles. To learn more, see our Ether Light XR review.


Nemo Tensor All-Season ($220): The Do-It-All Pad
While the Quasar 3D’s warmth-to-weight ratio is one of its drawbacks, it’s an unquestioned strength of the Tensor All-Season Ultralight. This pad weighs just over a pound (1 lb. 1 oz.) in its regular mummy version and yet has an impressive, sleep-soundly-through-a-hard-freeze R-value of 5.4. The Tensor doesn’t have the Quasar’s body-cradling curves, but we’ve found its boxed baffles and 3.5-inch-thickness to be plenty comfy. You’ll have to treat its 20D nylon top / 40D base with more care, though, and it will eat into your budget more. But the 40 extra bucks are worth it for backpackers who want to extend their fun into the fourth season. For more, read our review of the Nemo Tensor All-Season.

Nemo Quasar 3D Insulated ($160)
Nemo Quasar 3D Insulated sleeping pad in the tent
4.3/5

The Quasar 3D is a well-built pad that earns top marks in comfort and durability. However, its warmth-to-weight ratio is at the bottom of the barrel for air pads.

Type
Air
R-value
3.3
Weight
1 lb. 9 oz.
Packed Size
8 x 4.5 in.
Thickness
3.5 in.
Fabric(s)
30D PU polyester
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Comfort

4/5
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Warmth / Weight

2.5/5
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Packed Size

4/5
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Durability

4/5
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Ease of Use

4/5
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Sustainability

5/5
Sea to Summit Ether Light XR ($199)
Sea to Summit Ether Light XR Insulated Sleeping Pad labeling
4.6/5

Thanks to a beefy, side-sleeper-approved 3.9-inch thickness, the Ether Light XR is one of the most comfortable summer pads we tested. It has a dependable construction and a commendable number of size options. A recent update made the pad warmer and lighter.

Type
Air
R-value
4.1
Weight
1 lb. 0.6 oz.
Packed Size
8.1 x 4.3 in.
Thickness
3.9 in.
Fabric(s)
30D/40D nylon
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Comfort

4/5
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Warmth / Weight

4/5
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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

1.7/5
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

Is the Quasar 3D Insulated for You?

If weight isn’t a top priority and you think you’ll be doing most of your camping—whether in the backcountry or close to your car—during summertime, the Nemo Quasar 3D Insulated is a great sleeping pad for maxing out your comfort and not breaking the bank. It’s a cozy, accommodating platform for most sleepers, and we like that its durable build can probably handle whatever you throw at it. If far-flung lakes and remote ranges are more your speed, though, you should probably opt for a pad that’s much lighter—and warmer to boot.

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