Sleep anywhere: The rise of ultralight sleeping bagsModern outdoor travel is no longer limited to weekends in a tent pitched near a campsite. One piece in particular has seen a quiet revolution: the ultralight sleeping bag. Ultralight sleeping bags that fit into a daily backpack, ready for a bivy under the stars or an unplanned night in the car. Not just for expeditions anymoreThe ultralight sleeping bag now proves its value far beyond mountain routes. Choosing the right ultralight sleeping bagBefore committing to an ultralight bag, take stock of the trip style and conditions.