Looking for a warm yet super light sleeping bag? The Chinook Thermopalm 32F - Mummy, Blue is the answer. The super heat-retaining Insufil Thermo filling in a 2-layer construction will keep you warm and avoids cold spots without adding weight or bulk. The outer nylon taffeta is very durable while the inner Pongee is super comfortable. This ultra-light sleeping bag packs down very small due to the 4-way compression sack. It is a great all weather sleeping bag for hiking, backpacking and camping far out in off the beaten track.