Comfort Deluxe Self-Inflating Sleeping Mat

Air Frame Construction is used on the Comfort Deluxe self inflating mat. The cross-cores (longitudinal and transverse) provide a level of stability previously unknown in self inflating mats.
This construction radically reduces the bounce commonly found in PU foam mats - in the Double version, one sleeper can turn over without disturbing the other sleeper.

Solution dyeing is a process where dye is added to the liquid polymer before the fibre is extruded. The benefit of this technology is that energy and water use as well as C0₂ emissions are significantly reduced.

In solution dyeing, the colour runs throughout the yarn, not just on the surface as it would with conventional dyeing. This is easy to imagine if you think of the cross section of a carrot (colour throughout) compared to a radish (colour only on the exterior).

Solution-dyed colours may not be quite as intense, but they also do not fade like conventionally-dyed materials.

To ensure that you will be warm when you sleep (especially when the ground is colder), it is essential to know how well your sleeping mat resists heat loss into the ground. This resistance is known as an R-Value. A laboratory-tested R-Value is the only way to measure resistance to heat loss

Sea to Summit has always provided independent lab-tested R-Values for its sleeping mats. Since January 2020 we have used the industry standard ASTM F3340 test to provide R-Values for our mats.

There are several other factors which will determine how well a sleeping mat will insulate, but the standardized ASTM R-Value test means you can compare resistance to heat loss in sleeping mats across different brands

Bluesign is a system run by an independent, Swiss-based third-party group that monitors every step in a supply chain to ensure the use of the most benign materials.

This approval states that the product’s production creates the fewest emissions and least pollution, holds high standards for humane conditions for workers and material safety standards for consumers.

The Sea to Summit XPEL Valve was the first valve developed specifically for self-inflating sleeping mats. It integrates a one-way inflate port, a large deflate port and a fine-tune button into a single, low-profile unit. The genius of the XPEL valve is that to deflate the sleeping mat, the valve is flipped over, allowing air to escape but not return into the mat.

This turns the one-way inflate valve into a one-way deflate valve - preventing the mat from drawing itself full of air as it is rolled up.

The XPEL valve fits the nozzle of an Airstream pump (sold separately) if you want to 'top up' your self-inflating mat which you can also do manually.

Supplied with all 2026 Sea to Summit self inflating mats, the side-loading stuff sack solves the perennial problem of trying to pack a sleeping mat end-on into a stuff sack. Loosen the drawcord, drop in the rolled-up mat, cinch the drawcord tight and you're ready to pack the mat in your bag.
Who thinks of things like this? We do.