Comfort
Warmth
Durability
Ease of Use
Weight & Packability
Sustainability
Dimensions
79 x 51 x 4 in.
Type
Self-inflating mat
R-value
6.5
Weight
9 lb. 13 oz.
Pros
Cons
Sea to Summit Comfort Deluxe Double
For this season's top models, see our guide to the Best Camping Mattresses.
The Sea to Summit Comfort Deluxe Double lives up to its name with a luxurious and supportive build that rivals the best camping mattresses we’ve tested. At 4 inches thick, it hits the comfort benchmark for high-end mats and offers excellent cushioning and ground isolation—even for side sleepers. The foam has a soft, premium feel that’s reminiscent of an at-home mattress topper: plush but not overly squishy, with just the right amount of support. The felt-like surface is cozy against the skin, and vertical sidewalls help maximize usable space across the entire rectangular 79-by-51-inch platform.
Sharing the mat with a partner felt natural, with enough width that I wasn’t jostled awake when my husband shifted around. The setup feels equivalent to placing two 25-inch-wide pads together, minus the annoying center gap. We’d still give a slight edge in plushness to the memory foam-like build of the Exped MegaMat Duo and the two-layer Hest Foamy, but the Sea to Summit Comfort Deluxe is undeniably one of the most comfortable double-wide mats on the market. Bonus points for thoughtful touches like pillow-securement Velcro at the head.
With an R-value of 6.5, the Sea to Summit Comfort Deluxe Double offers solid warmth for three-season and light winter camping. It’s right in line with similar luxury camping mattresses like the REI Camp Dreamer XL (6.6) and slightly below the Exped MegaMat Duo (8.1), but still warm enough to keep most sleepers comfortable in temps well below freezing. During testing in 40–45°F conditions, we paired the mat with a 20-degree double quilt and never once felt cold seeping in from underneath.
While it might not be the best choice for deep-winter camping in sub-20°F temps, the Comfort Deluxe delivers trustworthy insulation for the vast majority of car campers. The thick foam construction holds heat well, and unless you're planning trips into the single digits, this mat should be plenty warm for year-round use.
The Comfort Deluxe Double offers good—but not standout—durability for a premium camping mattress. Its 75-denier polyester base is in line with top competitors like the Exped MegaMat Duo and Nemo Roamer, but the 30-denier polyester top is thinner than most. Many alternatives opt for 50- or even 75-denier tops, which makes the Sea to Summit a bit more vulnerable to wear and damage—especially if you camp with dogs or active kids who may be rougher on gear.
On the bright side, the inflate/deflate valves are impressively solid and easy to use, and the mat comes with a repair kit that includes patches and a tube of silicone adhesive. While it doesn’t quite match the bomber feel of the Exped MegaMat Duo, the Comfort Deluxe is still a well-made and reasonably durable mat for the price, and it doesn’t hurt that it undercuts the Exped by about $30.
The Sea to Summit Comfort Deluxe Double is easy to operate once you understand its dual-valve design, but it comes with some notable convenience tradeoffs. Each of the two valves has both inflate and deflate settings—simply twist the wing to “inflate” to start self-inflation or “deflate” to release air. This system is intuitive and worked reliably throughout testing. However, the first-time setup was slow; the vacuum-sealed foam took three full days to expand out of the box, and even on subsequent trips, we found it took 30 minutes or more to fully inflate on its own.
Unlike some competitors, Sea to Summit doesn’t include a pump sack, which is disappointing for a $399 mattress—especially if you’re trying to quickly top it off after dark or in cold weather. Finally, the included top-loading stuff sack is snug and tricky to repack. While not impossible, getting the mat back in can take a few grunts and retries, and we wish it were more forgiving or side-loading like the stuff sack that comes with the Exped MegaMat.
Like most double-wide camping mattresses, the Comfort Deluxe Double comes with a real penalty in bulk and weight. At 9 pounds 5 ounces, it’s on the heavier end of the spectrum, though not the worst offender—Exped’s MegaMat Duo LW+ weighs 9 pounds 11 ounces, while Nemo’s Roamer Double is a bit more manageable at 7 pounds 8 ounces. Packed size is decent for the category at 27 x 10 inches, comparing favorably to the MegaMat Duo (27.6 x 11.8 in.) and nearly matching the Roamer (11 x 26 in.).
That said, this is still a large item to store and transport. If you’re working with limited trunk space, a small car, or just want to streamline your gear closet, it could be a tight squeeze. But for campers who can handle the extra bulk, the tradeoff is a supremely comfortable sleeping experience that many will find well worth the space.
Select icon to view details:
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.
Recycled Materials
Recycled materials are prevalent in outdoor gear, with nylon, polyester, wool, and down among the most common, but the composition varies widely. A green check mark indicates the product is made with a substantial amount of recycled materials (100% recycled or the core fabric that makes up most of the product is recycled), a yellow check means it contains a moderate to small amount of recycled materials, while a red X means there are no recycled materials in the product.
Bluesign Approved
Bluesign Technologies, based in Switzerland, operates a third-party textile management system that ensures materials are manufactured to strict environmental, chemical, and worker safety standards. A green check mark indicates a product is either a Bluesign Product (contains at least 90% Bluesign-approved fabrics and 20-30% Bluesign-approved accessories) or features a significant amount of Bluesign-approved materials. A yellow check mark means it uses some Bluesign-approved materials but less than the aforementioned category, and a red X means there are no Bluesign-approved materials in the product.
Repair Kit
Repair kits help extend a product’s lifespan by allowing users to quickly fix issues—like sleeping pad punctures or damaged inflation valve seals—rather than replace the item entirely. A green check indicates the product includes a repair kit, while a red X means it does not.
Responsible Manufacturing
This criterion evaluates a brand’s commitment to fair wages, safe working conditions, and reducing environmental impact through certifications and programs like Fair Trade Certified, Fair Wear Foundation, Worldwide Responsible Accredited Production (WRAP), and the Fair Labor Association, while also recognizing brands that manufacture primarily in the U.S. or Europe under strict labor and environmental regulations. A green check mark indicates a brand meets our responsible manufacturing criteria, while a red X means it does not.
Recycled and/or Reduced Packaging
Packaging can add significant waste to outdoor gear purchases, so many brands work to reduce its impact by using recycled materials, incorporating Forest Stewardship Council-certified paper products, and minimizing plastic and paper use. A green check mark indicates a brand uses recycled or reduced materials across all of its packaging, a yellow check indicates moderate or limited use of recycled or reduced packaging, and a red X indicates the brand does not make either of these efforts.
Repair Services
Repair services extend the lifespan of outdoor gear and reduce overall consumption, though programs vary widely. Some brands offer comprehensive repairs for a range of issues, while others provide limited or no repair support. A green check mark indicates a robust repair program, a yellow check mark indicates limited repair services, and a red X indicates the brand does not offer repair services.
Resale and/or Recycling Services
Resale and recycling programs help keep outdoor gear in circulation longer and out of landfills, ranging from trade-in resale platforms that offer store credit to take-back initiatives that recycle products at the end of their usable life. A green check mark indicates a brand offers both resale and recycling programs, a yellow check mark indicates it offers one or the two, and a red X indicates it offers neither.
Carbon Footprint Tracking
This criterion evaluates whether a brand measures, reports, and works to reduce its greenhouse gas emissions using established frameworks such as the Higg Index, Greenhouse Gas Protocol, or The Change Climate Project. A green check mark indicates a brand publicly reports greenhouse gas emissions data, sets clearly defined reduction targets, and uses established tracking frameworks such as Higg or The Change Climate Project. A yellow check mark indicates the brand tracks emissions and outlines reduction goals but provides limited data, lacks science-based verification, or does not clearly report progress. A red X indicates the brand does not appear to track greenhouse gas emissions or provides so little information that its efforts cannot be verified.
Annual Impact Report
Annual impact reports provide transparency and accountability by outlining a brand’s sustainability efforts across areas such as material sourcing, greenhouse gas emissions, waste, water use, supply chains, and packaging. A green check mark indicates a brand publishes a detailed, brand-specific impact report that closely aligns with our sustainability criteria and leaves little room for ambiguity. A yellow check indicates a brand provides some relevant sustainability reporting but lacks detail in key areas or is covered only briefly within a parent company report. A red X indicates a brand does not regularly publish an impact report.
Exped MegaMat Duo LW+ ($419): Top of the Heap
The MegaMat Duo is the Comfort Deluxe Double’s most direct competition, and we think it’s slightly better. We should note, however, that the “regular” MegaMat Duo is only 41 inches wide, and so the more analogous version is the “LW+,” which measures 52 inches across. That’s an inch wider than the Comfort Deluxe Double, and both pads are 4 inches thick and feature self-inflating foam designs that had our testers speeding toward dreamland. The MegmaMat Duo LW+ has a much higher R-value, though (8.1 compared to 6.5), and quality of life features such as a carry handle, an included pump sack, and easier storage. It’s also—somewhat incredibly—even more expensive, at $420 (the regular version is $370). If price is no object, we’d go with the MegaMat. But if $400 is a line in the sand you don’t want to cross, the Comfort Deluxe Double is a great pad. For more, read our review of the Exped MegaMat Duo.
Nemo Quasar 3D Insulated Double ($280): Dialing Back Price and Plushness
The Nemo Quasar 3D Insulated Double alleviates one of our biggest issues with the Comfort Deluxe Double, which is its sky-high price tag. This pad costs over $100 less and might help you free your checkbook up a little for other camping purchases, but be aware that you’ll be giving up quite a bit of comfort. The Quasar 3D is only 3.5 inches thick but is a manually inflating air baffle pad, so its feel is less luxe and supportive than the self-inflating Comfort Deluxe’s foam. That design makes the Quasar 3D a lot lighter—it weighs 3 pounds 6 ounces—and with 30-denier polyester fabric the Quasar 3D is less burly as well, but at least it’s just as wide. This model is a good option for campers who don’t necessarily need the Comfort Deluxe’s premium feel but still want plenty of room.
This pad is luxuriously comfortable, as you might expect from the most expensive model we tested. However, the Comfort Deluxe Double doesn’t quite reach the heights of its main competitor, the Exped MegaMat Duo, due to some small design limitations.
Comfort
Warmth
Durability
Ease of Use
Weight & Packability
Sustainability
This double-wide pad is the ultimate sleep platform for outdoorsy couples or solo campers who want to max out their sleeping space. The MegaMat is plush, warm, and supportive, and the new version has some welcome design updates. If only it were less expensive and easier to inflate.
Comfort
Warmth
Durability
Ease of Use
Weight & Packability
Sustainability
The Quasar 3D Insulated is the only pad we tested that’s a true backpacking/car camping hybrid. It offers a healthy dose of durability and support (for an air pad, at least), although it’s not very warm and way less comfy than true car camping models.
Comfort
Warmth
Durability
Ease of Use
Weight & Packability
Sustainability
Sea to Summit’s Comfort Deluxe Double is a premium two-person camping mattress that offers excellent comfort, support, and warmth for car campers who prioritize a great night’s sleep. Its spacious rectangular shape, 4 inches of plush foam, and thoughtful details like vertical sidewalls and pillow attachment points make it one of the most livable designs in its class. While competitors like the Exped MegaMat edge it out in overall comfort, warmth, and durability, the Sea to Summit Comfort Deluxe holds its own—and it doesn’t hurt that it costs slightly less—making it a well-rounded and compelling option for couples.
sleep under the stars
Gear Guide
Best Camping Sleeping Bags of 2026Gear Guide
Best Camping Chairs of 2026Gear Guide
Best Camping Tents of 2026Gear Guide
Best Camping Stoves of 2026