When space and weight is at a premium (think biking trips, kayak treks, and epic backpacking), you want a super packable, stuffable sleeping bag that'll fit into sterns, bike panniers, and bags. The lightweight, PFC-free, mummy-style Marmot Nanowave 35 Sleeping Bag - Long will keep you comfortable to around thirty–five 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.