The ideal choice for first time campers and those looking to upgrade fron the closed cell foam, the new Trail Scout mattress is 25% thicker to provide additional warmth and comfort. And in keeping with our Trek& Travel Series updates, it has also been redesigned with a weight saving, streamlined shape to offset any gains in weight and bulk. Stuff sack included. R-value: 3.7/Weight: 610g/1lbs 15oz.