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Sea to Summit Ether Light XT Extra-Thick Insulated Sleeping Pad, Rectangular - Regular (72 x 25 x 4 inches)

4.4 (13) Write Review
Free shipping on orders over $29.99

$164.25

$ 77 .99 $77.99

In Stock

About this item

  • 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
  • Rectangular - Regular size measures 72 x 25 x 4 inches, packs to 4.5 x 11 inches, weighs 1.4 pounds; includes stuff sack, field repair kit, and PillowLock patches for securing a Sea to Summit pillow to mat


Product Description

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.

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Root Beer
August 20, 2025
Great sleeping pad, comfortable and I really like having the extra width
Robert
August 2, 2025
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!
TN Thompson
July 28, 2025
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.
Alicia
July 20, 2025
I’m 5’9” and 200lbs, and I needed a lightweight backpacking sleep mat that was actually comfortable for my strong lady body. This one checks all the boxes. It’s quick and easy to inflate, lightweight, takes up little space when packed, and comfortable. My only complaint, if I were going to complain, is that it’s a little noisy when you are moving around. Such is life on an air mattress.
Customer
July 18, 2025
The pad is comfortable but it isn't 4 inches thick as advertised. It is warm to sleep on. The first trip out we had temperatures between 29 to 30 degrees and I was warm with this pad. It is very good quality and I would recommend it but be aware that the measurements are not what is advertised.
review
June 16, 2025
nice, light, insulated pad. Good name and product
darlene t.
May 23, 2025
bought this for my grandson for his Appal;achian hike - worked very well
Lwgonefishin
March 30, 2025
I liked the thickness and how compact it is, but of was loud when you move on it. It's like rolling around on garbage bags. (Updated) I slept on it last night for only the 4th time and it went flat on me. I use a cot plus air mattress, so it's not like I was putting it on anything that would put holes in it. For how much it is, I would expect it to last much longer. Very disappointed.
Roger
March 21, 2025
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
February 21, 2025
Top. Fait un peu de bruit suite a l'isolation interne. Simple rapide et efficace
Ash
February 3, 2025
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
January 24, 2025
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
JM
December 19, 2024
Me he decidido por esta colchoneta por la crítica general y porque quiero comodida en mis travesías. Esta era la que mejor relación calidad-comodidad-(precio depende de la oferta). Yo lo he comprado a 130€ es es muy buen precio, lo he visto a 160-180 € en varios lugares. Es un colchón de aire extremadamente cómodo. Para dormir de lado es ideal, podría dormir tranquilamente diariamente ahí. No pesa nada, menos de medio kilo, y su embalaje doblado ocupa como una cantimplora de medio litro de agua. En ese aspecto es ideal. La única pega es que como cualquier colchón de aire es el ruido. Si te mueves suena obviamente. Pero es algo que lo tienen todos. El único que he probado que no hace ruido son los autoinchables con estructura (confort plus creo que se llaman), pero ocupan el doble de espacio guardado. En resumen, fantástica colchoneta.