Forty years ago, we patented the first self-inflating mattress and introduced the world to a new level of backcountry comfort. We"re celebrating our anniversary with a limited edition mattress featuring our original logo and colors. The 40th Anniversary Edition mattress may look like a throwback to our first Therm-a-Rest mattress, but it features cutting-edge technology that offers excellent comfort, packability and 4-season warmth. The foam in this mattress is the lightest, most compressible foam we"ve ever used, allowing greater comfort without additional weight or bulk. Stuff sack and repair kit included.