Comfort Light Self-Inflating Sleeping Mat

Sea To Summit


The Comfort Light™ Self Inflating Mat is an excellent lightweight, backpacking option that offers superb comfort at a low weight and small packed size. The Delta Core™ technology removes 40% of bulk and weight from the 2" thick foam to keep your nights comfortable. The multi-function valve is a low profile, high volume valve that flips over to allow fast deflation without fighting re-inflation as you go. The Comfort Light Self-Inflating Mat is a real alternative to air mats for many backpackers and for campers who like to sleep comfortably. 

Our blog post "Which Mat Should I Choose" has some helpful tips on picking the perfect self-inflating mat (or reasons why you might prefer an air mat).


  • Different from other lightweight self-inflating mats? Yes. The Delta Core technology reduces the weight and packed volume by 40% - and the Comfort Light is a full 2" thick (compared similarly-priced 1.5"-thick self-inflating mats.)
  • Insulated well enough for three-season temperatures? Yes. The Comfort Light SI Mat has a tested R-Value of 3.1 - suitable for use from Spring to Fall.
  • Small enough when packed to use for backpacking? Possibly. The packed size of 5.75"x10" (Regular) will fit into most conventional backpacker's 60+ Liter packs. Performance-oriented backpackers may prefer an air mat - see above.



Regular: 1 lb 5 oz ≈ Lighter than a carton of eggs

Packed Size Comparison

Similar to a roll of paper towels


3 Season: Take this mat out late Spring into early Fall, no matter where you are


Woven 30D polyester face fabric chosen for its light weight and strength 


  • R-Value of 3.1 - sufficient warmth for Spring to Fall camping. Click here to learn about the new ASTM R-Value test standard. 
  • 2" thick foam for a really comfortable night sleep
  • Flip-over multi-function valve for fast and easy inflation, deflation and fine tuning of air pressure
  • Woven 30D polyester face fabric chosen for its light weight and strength
  • Silicone print prevents your sleeping bag from slipping on the mat, or the mat slipping on the tent floor
  • Utilizes Delta Core technology, which significantly reduces weight and packed volume
  • Supplied Pillow Lock patches keep your Sea to Summit pillow firmly attached to the mat
  • Regular size : 72" X 20", Large Size : 78" X 25" 


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