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.

• Limited Edition: 1972 logo and color, with individual serial number, available for a limited time.


• Comfortable: Two-inch thickness provides a high degree of comfort and support.


• Efficient Warmth: The 40th Anniversary Edition features the lightest, most compressible foam used in any of our mattresses, allowing 4-season warmth without extra weight.


• Visible: A glow-in-the-dark valve makes it easy to find at night.