The Traveller Sleeping Bag is great for a summer yurt trip, El Camino pilgrimage, bike tour, or as a lightweight backpacking sleeping bag. It's also perfect for those times when you didn't think you had the room for a sleeping bag but needed one, like impromptu couch surfing, stuck at an airport or staying warm on an overnight ferry.650 fill PFC-free Ultra-Dry Down keeps you warm on cooler nights and a full length zipper allows for ventilation in warmer temperatures (and lets you couple two Travellers together).