The Trekker Lounge from Therm-a-Rest let’s you convert your self-inflating mattress into a comfortable, full-length camp lounge. This sleeve covers the entire mattress and never has to be removed. The Trekker Lounge sets up in a snap and converts instantly into a bed. There’s even a built-on Stuff-It pillow for your sleeping comfort. Your choice of 20 or 25 inch widths.