(as of Jun 13, 2025 15:18:41 UTC – Details)
Product Description
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Customer Reviews
4.4 out of 5 stars 346
4.4 out of 5 stars 346
4.5 out of 5 stars 170
4.0 out of 5 stars 107
4.7 out of 5 stars 26
4.5 out of 5 stars 536
Price
$149.25$149.25 $115.42$115.42 $148.85$148.85 $134.25$134.25 $199.00$199.00 $76.80$76.80
Thickness
4 in 4 in 4 in 4 in 2.5 in 1.5 in
Weight of Tapered, Regular Size
1.1 lbs 1.1 lbs 1.6 lbs 0.86 lbs 1.4 lbs 2.3 lbs
R-value (higher is warmer)
3.2 3.5 6.2 1.2 3.7 4.2
Seasons
3 Seasons 3 Seasons 4 Seasons 1 Season 3 Seasons 3 Seasons
Inflation Method
Integrated Airstream Pumpsack Integrated Airstream Pumpsack Integrated Airstream Pumpsack Integrated Airstream Pumpsack Integrated Airstream Pumpsack Self-inflating
The Sea to Summit Ether Light XT Extra-Thick Insulated Air Mattress is a lightweight, 3-season sleeping pad for backpacking, camping, and bike touring. Its Air Sprung Cell construction mimics a spring mattress, maintaining more body contact area and even dispersion of pressure for restful backcountry slumber. At 4 inches thick, the sleeping pad features a single-layer design with flexible loops that create large air pockets, providing a plush, deep sleeping surface that is ideal for side sleepers. The multi-function reversible valve allows for fast and easy inflation—with the integrated Airstream Pumpsack which inflates the pad in just a few breaths—one-way deflation for quick packup, and fine-tuning of air pressure for a good night’s sleep. The insulated pad features Thermolite insulation which lofts up inside the Air Sprung Cells to prevent convective heat loss to the cold ground, as well as Exkin Platinum reflective fabric which radiates heat back during sleep (R-Value of 3.2—the higher the R-value, the warmer the sleeping pad). Non-slip 30D/40D nylon face fabric is durable and quiet. The Sea to Summit Ether Light XT Insulated Air Mattress is available in five sizes: Tapered- Small measures 66 x 21.5 x 4 inches, packs to 4.5 x 9.5 inches, weighs 1 pound; Tapered – Regular measures 72 x 21.5 x 4 inches, packs to 4.5 x 9.5 inches, weighs 1.1 pounds; Tapered – Large measures 78 x 25 x 4 inches, packs to 4.75 x 11 inches, weighs 1.4 pounds; Rectangular – Regular measures 72 x 25 x 4 inches, packs to 4.5 x 11 inches, weighs 1.4 pounds; Rectangular – Large measures 78 x 25 x 4 inches, packs to 4.5 x 11 inches, weighs 1.5 pounds. Includes stuff sack, field repair kit, and PillowLock patches for securing a Sea to Summit pillow to mat. Sea to Summit products are guaranteed against defects in materials or workmanship for the lifetime of the product.
”
Extra-thick 4-inch, lightweight air mattress provides a plush sleeping experience for 3-season (3.2 R-Value) backpacking, camping, and bike touring
Single-layer Air Sprung Cell construction mimics a spring mattress, using flexible loops to create large air pockets that are ideal for side sleepers
Multi-function valve for fast inflation in just a few breaths (using integrated Airstream Pumpsack), one-way deflation for quick packup, and fine-tuning of air pressure
Insulated pad features high-loft fiberfill and reflective fabric, to prevent heat loss and radiate heat back during sleep; non-slip 30D/40D nylon face fabric is durable and quiet
Tapered – Regular size measures 72 x 21.5 x 4 inches, packs to 4.5 x 9.5 inches, weighs 1.1 pounds; includes stuff sack, field repair kit, and PillowLock patches for securing a Sea to Summit pillow to mat
Customers say
Customers find the sleeping pad comfortable and appreciate its clever design, with one noting that luxury doesn’t have to weigh a ton. They like its size, particularly the 25-inch width, and its lightweight nature, while also praising its amazing 4-inch thickness for side sleepers and easy inflation. The noise level receives mixed feedback – while some say it’s not loud when rolling over, others find it noisy. Durability is also mixed, with some finding it well-engineered while others report poor construction.
Root Beer –
Great sleeping pad
Great sleeping pad, comfortable and I really like having the extra width
TN Thompson –
Comfortable pad for side sleeper
Nice and thick for a side sleeper. Never bottomed out. Tested it overnight on bedroom floor and slept great. Packs up very small. Works great part of my Big Agnes Diamond Park sleep system. Not loud when rolling over. Great addition to my motorcycle camping kit.
review –
sleeping pad
nice, light, insulated pad. Good name and product
Paul B. –
Pad
Very satisfied with product very comfortable
darlene t. –
sleeping bag
bought this for my grandson for his Appal;achian hike – worked very well
Robert –
Great for Men (and dogs) too!
TL;DR – Ultralight, ultra comfortable, ultra strong! Increased r-value and less weight than the mens. Not annoying like Thermarest. Medium sized dog-proof. Would buy again!I’ll have to add photos later but as a 5’9″ male who sleeps cold, I appreciated the extra overall width and increased r-value! I am an inverted triangle body shape with pretty wide shoulders and love that the mat stays wide even down towards my hips. Lots of room to roll around on as an active sleeper! It also isn’t very crinkly or loud. Definitely not enough to disturb or irritate me in the middle of the night. I think it was also just barely lighter weight than the men’s version as well. I will say it does take up most of the floor space in my Copper Spur UL1. But with the 4″ of padding I’ve never had a problem hitting my head or feet on the tent while sleeping. This is hands down the best pad I have ever used! It is also bomb proof as my dog had moved all over it getting comfortable and I have had no issues with holes or punctures!
Shellava –
Dimples rule
As a side and stomach sleeper, I find the dimples are the most comfortable for me. I also love the inflation sack this comes with, and the 25â width.
Cody A. Craven –
Poor Construction
This is a very nice pad. My favorite in terms of design, comfort, and ease of use… But, I imagine I’m one of the few that got a defective pad that’s made it unusable. I use it for car camping so no great reason to have punctures, yet I’ve patched well over 50 holes in my pad and they’re all due to poor construction around the baffle areas. Patching holes in this pad has become an hour long nightly routine for me and I have to inflate the pad more than 6 times every night. I also just don’t like the patched polka dot look any more so I’ve probably out lived this one. Overall a negative experience, hopefully noone else has my issue.
Roger –
No descarto que sea un mal producto! Lo que es penoso es el estado en el que me ha llegado! Con claros indicios de haber sido usado, estropeado y reparado con parches de una manera muy chapuzas! Por no decir la suciedad en la parte de atras!Deberian revisar el estado en el que devuelven los productos mas que nada para no revenderlos a ptros clientes!
luigetti –
Top. Fait un peu de bruit suite a l’isolation interne. Simple rapide et efficace
Ash –
I’m not normally one to drop 300 or more on a sleeping pad, but after breaking down and buying this one I’ve been happy with the comfort I got while sleeping on it.Yes it can be a bit noisy but it’s nothing in my opinion loud enough to make it a deal breaker. If your in cold climates I’d say get the cold weather pad they offer. But for myself where I am in Canada winter cold is normally around 5c° or 41F° plus or minus 10° so this pad works well for me.Worth looking into.
Michael Casagrande –
Il sistema a celle utilizzato per questo materassino è comodo in modo assurdo, dormirci è piacevole e il suo indice di riparo termico dal suolo è sufficiente per essere usato anche a -10.Utilizzato in montagna durante trekking arrampicata, comodo, pratico, veloce da gonfiare con il sistema a sacco, si sgonfia e si ripone rapidamente. perso contenuto considerando le dimensioni una volta aperto, come al solito la SEA TO SUMMIT è una garanzia
Yoshi –
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