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Item # STSAD201M

Sea to Summit UltraLight Insulated Mat Inflatable Sleeping Pad

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Starting At: $139.00

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With an R-value of 3.1, a compact packed size, and a weight of just over a pound, the inflatable Sea to Summit UltraLight Insulated Mat is ready-made for 3-season backpacking. It even comes with an innovative pump sack that adds additional value by aiding in inflation.


With an R-value of 3.1, a compact packed size, and a weight of just over a pound, the inflatable Sea to Summit UltraLight Insulated Mat is ready-made for 3-season backpacking. It even comes with an innovative pump sack that adds additional value by aiding in inflation.

Interconnected chambers formed by a dot-welded pattern, the pad’s unique Air Sprung Cells create a supportive sleeping base that better conforms to your sleeping body than traditional vertical or horizontal baffles while keeping both weight and packed size to a minimum.

The face fabric and internal extrusion-laminated TPU coating bolster durability and longevity of the pad on both the outside and the inside. An anti-microbial treatment in the TPU prevents any moisture introduced to the interior of the pad from causing deterioration issues. An included innovative pump sack makes inflation a snap and cuts down even further on moisture concerns. It's also custom-cut to provide a compact fit for the deflated pad.

Dual thermal technologies equip the UltraLight Insulated Mat for use in colder temperatures. A lightweight, non-woven metalized fabric, Exkin Platinum creates an internal radiant barrier that keeps the warmth of your body from dissipating. This pliable fabric is also quieter than some “crinklier” fabrics used to achieve heat reflectivity. Additionally, tsynthetic insulation is nestled inside the Air Sprung Cells, delivering high-loft responsiveness and an excellent warmth-to-weight ratio.

A stand-out feature on Sea to Summit pads is the low-profile multi-function valve. A one-way design allows you to blow up the pad without any fuss and an internal button lets you make micro adjustments to firmness. A larger port beneath the top portion of the valve makes deflation quick and easy. Additionally, by setting flush to the surface of the pad, the valve also cuts down on potential warranty issues and helps to maintain the compact packed size.

Available in a variety of sizes, the Sea to Summit UltraLight Insulated Mat includes a small repair kit that includes self-adhesive patches and a spare one-way valve flap.

  • Innovative pump sack included for ease of inflation
  • Exkin Platinum fabric and Thermolite insulation are combined to prevent radiant and convective heat loss
  • Thickness: 2 in / 5 cm
  • Multi-function valve for easy inflation, deflation and fine tuning of air pressure
  • 40D rip-stop nylon face fabric offers the right balance between weight and durability
  • TPU lamination process - one used in the medical and aeronautical industries but unique to the outdoor industry - is vastly superior to the roll-to-roll lamination process that is commonly used in outdoor products at present. The TPU bonds better and more consistently, virtually eliminating delamination issues.
  • Extended storage instructions: mat should be laid flat, folded as few times as possible with valve open

Technical Specs

Best Use
R Value
Item Weight
Xsmall: 12.3 oz
Small: 15.1 oz
Regular: 16.9 oz
Large: 20.9 oz
Item Dimensions
Xsmall: 50" x 21.5" x 2"
Small: 66" x 21.5" x 2"
Regular: 72" x 21.5" x 2"
Large: 78" x 25" x 2"
Pump Sack, Stuff Sack, and Repair Kit Included
Limited Lifetime
Inflatable Sleeping Pad
Packed Size
Xsmall: 3.5" x 9"
Small: 4" x 9"
Regular: 4" x 9"
Large: 4" x 10"

3 Reviews

4.67 / 5


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Durable Pad


The S2S Ultralight Insulated pad is one of the more durable inflatable pads out there. I used my first one for approx. 100 nights before deciding to pick up a new one in the XS size. In those 100 nights, I never got a single leak! Other pads have had baffles delaminate or small punctures. I do use a tyvek groundsheet to protect the pad. Another benefit of this pad is that it inflates very quickly.


This is a comfortable pad, but it's not quite as comfortable or as warm as some of the other pads out there.

Michael G.


Ultralight Comfort to GO!


This pad weighs nothing but is as comfortable as thicker, heavier pads. How do they do it? This really is the ultimate sleeping pad to lighten up your pack and get a good nights' sleep. The stuff sac doubling as an inflation bellows is brilliant! Inflation is under a minute for quick and painless setup. Combined with the Sea to Summit pillow, this is the ultimate in on the trail comfort.


Packaging may not be recycle-able in all areas.

Lillie P.


Comfortable Pad


I got this to replace my foam folding sleeping pad. It is so much more comfortable! It's perfect for side-sleeping, I still get a little sore and move around, but I think I'll start to get more used to it. I definitely notice it keeping me warmer compared to the pad I was using. It's also really easy to inflate and deflate, and packs down quite small. I bought the small size (I'm about 5'4") and it works for me.


It's a little bit noisy when moving around at night.