Reviews You Can Rely On

Sea to Summit Comfort Plus Insulated Review

Extreme comfort, great warmth, and stability combine in this heavier camping bed
gearlab tested logo
Sea to Summit Comfort Plus Insulated Review (This bonafide PCT hiker enjoyed the comfort of this pad, but it does weigh a hefty amount, especially if carrying for...)
This bonafide PCT hiker enjoyed the comfort of this pad, but it does weigh a hefty amount, especially if carrying for thousands of miles.
Credit: Matt Bento
Price:  $239 List
  • 1
  • 2
  • 3
  • 4
  • 5
Manufacturer:   Sea to Summit
By Brian Martin ⋅ Review Editor  ⋅  Sep 27, 2023
71
OVERALL
SCORE


RANKED
#6 of 16
  • Comfort - 30% 10.0
  • Weight - 30% 4.0
  • Warmth - 20% 6.8
  • Packed Size - 10% 6.0
  • Quality of Construction - 10% 9.0

Our Verdict

The Sea to Summit Comfort Plus Insulated is an incredibly comfortable, warm, and functional sleeping pad that sacrifices a bit of weight for durability and air chamber redundancy. To those who have spent nights out sans pad or on a deflated sleeping pad, the redundant air chambers represent another level of durability. This pad isn't only ultra-comfortable, but the dual air chambers almost guarantee you won't be sleeping on the cold hard ground. The redundant chamber system is unique to the Comfort Plus, making it ultra-reliable but also quite a bit heavier than comparable sleeping pads. See how it measures up versus competitors in our full article on the best sleeping pads.
REASONS TO BUY
Comfortable
Dual air chambers are redundant
Quiet
Warm
Stable
Supportive
REASONS TO AVOID
Heavy
Expensive
Editor's Note: This review was updated for accuracy on September 27, 2023, after streamlining our testing metrics.

Compare to Similar Products

 
Awards Top Pick Award
An Exceptional Level of Comfort
Editors' Choice Award
Best Overall Sleeping Pad
Editors' Choice Award
Best Sleeping Pad for Extreme Cold
Best Buy Award
Best Bang for the Buck
Best Buy Award
Budget Pick for Basic Performance
Price $199.95 at Backcountry
Compare at 3 sellers
$199.95 at REI
Compare at 3 sellers
$191.96 at Amazon
Compare at 3 sellers
Check Price at Backcountry
Compare at 2 sellers
$44.95 at Backcountry
Compare at 3 sellers
Overall Score Sort Icon
71
82
82
69
58
Star Rating
  • 1
  • 2
  • 3
  • 4
  • 5
  • 1
  • 2
  • 3
  • 4
  • 5
  • 1
  • 2
  • 3
  • 4
  • 5
  • 1
  • 2
  • 3
  • 4
  • 5
  • 1
  • 2
  • 3
  • 4
  • 5
Bottom Line Ideal for folks who think sleeping pads cannot provide mega comfort, though it does weigh more than othersThis sleeping pad is comfortable, lightweight, and warm enough for all but the coldest winter campingThis is one of our all-time favorite pads for its incredible warmth-to-weight ratioIf you want a light pad on a budget, it's hard to beat this oneA lightweight sleeping pad that won't break the bank and makes a great addition to winter sleep systems
Rating Categories Sea to Summit Comfo... Nemo Tensor All-Sea... Therm-a-Rest NeoAir... Klymit Static V2 NEMO Switchback
Comfort (30%)
10.0
8.5
8.0
7.0
3.5
Weight (30%)
4.0
8.0
7.8
7.3
8.3
Warmth (20%)
6.8
8.2
10.0
4.2
4.9
Packed Size (10%)
6.0
8.8
8.0
9.5
3.0
Quality of Construction (10%)
9.0
7.0
7.0
8.0
10.0
Specs Sea to Summit Comfo... Nemo Tensor All-Sea... Therm-a-Rest NeoAir... Klymit Static V2 NEMO Switchback
Measured Weight 28.7 oz 15.4 oz 16.0 oz 17.7 oz 14.5 oz
Claimed R-Value 4.0 5.4 7.3 1.3 2.0
Packed Volume (L) 3.1 L 2.1 L 2.4 L 0.9 L 8.9 L
Thickness 2.5 in 3.5 in 3.0 in 2.5 in 0.9 in
Bottom Material 30D/40D nylon 40D nylon (bluesign approved) 70D nylon 75D polyester PE foam
Tested Length 72 in 72 in 72 in 72 in 72 in
Tested Width 21.5 in 20 in 20 in 23 in 20 in
Insulation Technology Exkin Platinum and Thermolite HL-1 Aluminized Film Triangular Core Matrix construction and ThermaCapture technology Not stated Closed-cell foam and low-emissivity film
Double Size Available Yes No No No No
Type Air construction, Air Sprung cells, synthetic insulation Air construction, sythetic insulation Air construction, synthetic insulation Air construction Closed-cell foam

Our Analysis and Test Results

The Comfort Plus Insulated is the only sleeping pad we tested that utilizes two entirely separate air chambers with separate inflation valves. This design does several things to boost comfort and durability. Pressure in one chamber doesn't cause a bounce in the other, and springing a leak in one is trivial as there is always a backup.

Performance Comparison


sea to summit comfort plus insulated - comfort or weight, which is more important to you? the comfort plus...
Comfort or weight, which is more important to you? The Comfort Plus is significantly more comfortable than most, but it is also much heavier.
Credit: Brian Martin

Comfort


If you're going to haul extra weight around on your back, it should be for a good reason. The Comfort Plus is an excellent reason to shoulder a bit more weight, as the dual air chambers and “Air Sprung Cells” lived up to their hype. Our testers noted nearly no pressure points common with other sleeping pads, as well as a great balance of breathability and warmth from below.


Why two air chambers? At first, this seemed a bit gimmicky as it is rare that our inflatable sleeping pads leak. However, after our extensive testing period, it became apparent why Sea to Summit utilized this design. The annoying bounce often created when shifting around on a sleeping pad was almost eliminated with this design. While our gear testers don't quite understand the physics behind it, the result is a bounce-free sleep.



While we found the elliptical size and shape of the regular size Comfort Plus to be more than adequate for our 5'11", 175-pound gear tester, there are options for smaller or larger pads and even a rectangular pad if you don't mind sacrificing a bit more weight for the extra wiggle room.

sea to summit comfort plus insulated - side and back sleepers alike will appreciate the bounce free feel of...
Side and back sleepers alike will appreciate the bounce free feel of the Comfort Plus. Dual air chambers allow you to fine tune the feel of this pad better than any other.
Credit: Brian Martin

Weight


Sometimes, innovation and build construction come at a price, and in the case of the Comfort Plus Insulated, that price is a high weight penalty. For as much love as we lavished on this pad, it's hard not to acknowledge the nearly two-pound Achilles' heel. If you're trying to parse down your kit for the maximum performance-to-weight ratio, this pad is a far less attractive option than others.


The Comfort Plus is so much heavier than other pads that ditching it could afford you the weight of an entire ultralight shelter or a warmer backpacking sleeping bag. You could shave an ounce by forgoing the stuff sack with an integrated pump sack if you don't mind blowing your pad up the old-fashioned way, but that still won't make this pad light. Some will value the dual-chamber redundancy of this pad enough to justify the weight penalty, but supplementing a lightweight pad with a foam one will net you around 26 ounces with the advantage of being more versatile and more durable overall. It all depends on your priorities.

sea to summit comfort plus insulated - at 1lb 12.7oz, the comfort plus isn't exactly a light weight. the...
At 1lb 12.7oz, the Comfort Plus isn't exactly a light weight. The unmatched durability and redundant air chambers may be worth it to you though.
Credit: Brian Martin

Warmth


The greatest thermal inefficiency of air-construction sleeping pads is the convection of moving air within the pad itself. Any movement (even breathing) causes warm air near your body to mix with cold air near the ground. The dual air chambers of the Comfort Plus, along with synthetic insulation, reduce this convective heat loss by keeping the warmer air trapped next to you. A reflective barrier prevents radiative heat loss.


The Comfort Plus retains a significant amount of heat without being ultra-thick or bulky. Throughout our testing, we marveled at the warmth/comfort ratio found while using this pad. An R-value of 4 makes this pad close to the top tier of warmth in sleeping pads we tested. That said, while the Comfort Plus was warm, it was significantly heavier and a bit less warm than our top-scoring option.

sea to summit comfort plus insulated - warmth, ease of inflation, and comfort are three very strong reasons...
Warmth, ease of inflation, and comfort are three very strong reasons to check out the Comfort Plus. It might cost a few extra ounces in your pack but the quality of sleep on this pad was second to none.
Credit: Brian Martin

Packed Size


The Comfort Plus Insulated does not pack down to a very small size, but it is definitely small enough for backpacking. Considering the warmth and comfort this pad provides, we consider it to be plenty packable.


The Comfort Plus packs into a stuff sack that is also an inflation bag. Though this adds some extra bulk, the convenience is worth the extra fraction of a liter that this adds. This bag actually saves a little space compared to the separate inflation bag that comes with most other sleeping pads.

sea to summit comfort plus insulated - the comfort plus insulated comes with a stuff sack that acts as an...
The Comfort Plus Insulated comes with a stuff sack that acts as an air pump and dry bag.
Credit: Jessica Haist

Quality of Construction


The Comfort Plus Insulated is a very well-made sleeping pad, and we wouldn't hesitate to take it anywhere. It's made with 40-denier nylon, which is thick enough to use directly on the ground. Throughout our testing, we intentionally slept on the ground and used the pad as a chair/couch around camp. Our far-from-gentle treatment revealed this pad's excellent durability. The outer fabric feels burly and ready for years of use and abuse.



We also awarded the Comfort Plus more durability points because of its dual-chamber design. Those who gravitate toward mountaineering, prickly desert environments, or extended trips in the backcountry will have peace of mind thanks to the redundant air chamber that'll get you through the night without having to use the included patch kit in the morning.

sea to summit comfort plus insulated - there really isn't any way to compete with redundant air chambers...
There really isn't any way to compete with redundant air chambers. The Comfort Plus Insulated represents a new way to do inflatable sleeping pads that almost eliminates the chances of being left flat on the ground.
Credit: Brian Martin

The Comfort Plus Insulated has our favorite valve system of any sleeping pad. The one-way valve fitted atop a large deflation valve makes inflation, fine adjustments, and deflation super easy, and the valves work so well that all of it is easy even when you're lying on the pad. Ten breaths on the bottom section and five on top gave us the perfect balance of rigidity and plushness.

sea to summit comfort plus insulated - we love the inflation and deflation system on the comfort plus...
We love the inflation and deflation system on the Comfort Plus Insulated.
Credit: Brian Martin

Should You Buy the Sea to Summit Comfort Plus Insulated?


The hefty price tag of the Comfort Plus Insulated is balanced against an excellent set of features and progressive design. In many ways, this pad is the Mercedes Benz of backcountry sleeping pads. You get many great features, and the build quality is high, but it costs a lot and isn't made strictly with weight savings in mind. We would recommend this sleeping pad to all but the crustiest weight weenies out there, knowing that a good night's sleep can make or break a backpacking trip. Buy this pad if you value comfort, convenience, and novel features over maximum performance per ounce.

What Other Sleeping Pads Should You Consider?


The Sea to Summit Comfort Plus Insulated is an excellent pad if you value comfort and support over low weight and small packed size. If you're looking for a lighter-weight pad that's still comfortable enough, we recommend the Therm-a-Rest NeoAir XLite NXT or the even warmer Therm-a-Rest NeoAir XTherm NXT. If you value comfort but want a less expensive option, check out the Nemo Quasar 3D Insulated.

Brian Martin