On Sale. Free Shipping. Therm-A-Rest Trekker Lounge DECENT FEATURES of the Therm-A-Rest Trekker Lounge Get comfortable adjustable side straps let you customize the fit Versatile stuff the soft, built-in fleece pillow sleeve with clothes for extra comfort Easy to use leave it on your mattress full-time providing easy packing and the instant comfort of a chair The SPECS for 20 inches Dimensions (Dia x tall): 20in. / 51 cm Weight: 1 lb 2 oz / 510 g Fits Mattress Width: 20in. NeoAir The SPECS for 25 inches Dimensions (Dia x tall): 25in. / 63 cm Weight: 1 lb 8 oz / 652 g Fits Mattress Width: 25in. NeoAir