The Western Mountaineering UltraLite 20 Degree Sleeping Bag is a compressible sleeping bag for moving through various climates during summer bike tours and hiking trips. Sleep in it. Or on it. Who cares, when you're in a different camp each night, this lofty fellow will be by your side. When the temps are low, zip up and tuck into the hood, you'll be toasty warm thanks to the full down collar and draft tube. When you're not off in dreamland, it compresses down into a 7"x13" stuff sack, taking up less space in your saddlebags or backpack and only weighing 1lb 13oz. Wowza!