Sleeping bag or warm blanket? Extra large, breathable, rectangular shaped 2-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-fibre fill reflects body heat yet efficiently transfers moisture away from the body and so maintains a wonderfully comfortable sleeping climate. Like all synthetic fibres, Sensofiber warms even when damp, is quick-drying, easy to maintain and long-lasting. The Navajo 500 XL is a solidly reliable, warm outdoor sleeping bag for camping and cabin tours.