Sleeping bag or warm blanket? Smaller cut, breathable, rectangular shaped 1-season synthetic sleeping bag made with environmentally friendly bluesign® certified materials. This rectangular shaped sleeping bag lets you easily couple two bags to provide the optimal temperature you require. The Sensofiber micro-fiber fill reflects body heat yet efficiently transfers moisture away from the body and so maintains a wonderfully comfortable sleeping climate. As all synthetic fibers, Sensofiber warms even when damp, is quick drying, easy to maintain and long-lasting. The Navajo 100 is a small pack sized, warm outdoor sleeping bag for camping and cabin tours in warmer regions.Sleeping bag or warm blanket? Smaller cut, breathable, rectangular shaped 1-season synthetic sleeping bag made with environmentally friendly bluesign® certified materials. This rectangular shaped sleeping bag lets you easily couple two bags to provide the optimal temperature you require. The Sensofiber micro-fiber fill reflects body heat yet efficiently transfers moisture away from the body and so maintains a wonderfully comfortable sleeping climate. As all synthetic fibers, Sensofiber warms even when damp, is quick drying, easy to maintain and long-lasting. The Navajo 100 is a small pack sized, warm outdoor sleeping bag for camping and cabin tours in warmer regions.