Exped's Dreamwalker 450 Sleeping Bag is suitable for ultralight backpacking and convenient for three-season camping. When the morning is still brisk, you can convert this sleeping bag into a parka with zippered armholes and a drawcord adjustable footbox. That means you can get up, stoke the campfire, and make breakfast without a shiver.At night, the Dreamwalker ensures warmth through nights from spring to fall.  The full-length center zipper lets you wear this bag like a blanket for warmer nights.