When space and weight are at a premium (think biking trips, kayak treks, and epic backpacking), you'll want a super packable, stuffable sleeping bag that'll fit into sterns, bike panniers, and bags. The lightweight, PFC-free, mummy-style Marmot Nanowave 50 Semi Rec Sleeping Bag – Long is made to keep you comfortable around fifty degrees Fahrenheit. Synthetic SpiraFil High Loft Insulation will keep you warm even when things get wet. The full-length zipper wraps around the footbox for easy ventilation. Two-way zippers plus a snagless draft tube prevent air from sneaking in and fabric from catching.