The Comfort Light Self Inflating Mat is an excellent lightweight backpacking option that offers superb comfort with minimal weight and packed size. The Delta Core™ technology removes 40% of bulk and weight while leaving a 2 inch thickness to keep your nights comfortable. The multi-function valve is a low profile, high volume valve that allows fast deflation without fighting re-inflation as you go.

　　As of January 1 2020, all sleeping mat manufacturers will test mats for R-Value in independent labs using the ASTM standard F3340-18. Having one test standard provides clarity and transparency to consumers and allows comparisons across brands. Since the standard was published, Sea to Summit has continued to work with other sleeping mat manufacturers and with accredited labs to ensure that the testing is accurate and representative of actual mat performance.

　　The new test protocol will see some changes to previously published R-Values. It’s important to note that where values do change, it doesn’t signify a drop or increase in warmth—it simply means they have been tested using a slightly different scale.

　　The packaging of some mats will still carry the previous R-Value, but the mat itself has not changed.