The Comfort Plus Self Inflating Womens (Regular) is perfect after a long day on the trails, allowing you to kick back and relax with some outdoor sophistication. The 3 inch thick mat features a premium 30D knit polyester fabric for a soft touch and with an R-Value of 5.2, it’s warm enough for use throughout all four seasons. With Delta Core technology, the mat has extra insulation at the hips and feet to prevent heat loss and convection with the ground. For natural, comfortable sleeping movement, the mat is also narrower in the shoulders and wider in the hips, following the contours of the female anatomy. The multi-function valve twists over the mat, allowing it to be rolled tightly without re-inflation.