The Therm-a-Rest Questar 30 Sleeping Bag is a down insulated mummy bag designed for 3-season camping and backpacking. The generous W. A.R.M. Fit takes a traditional mummy shape and gives you a bit more wiggle room so you can sleep in any position without feeling restricted. The 650-fill down Features a Nikwax hydrophobic treatment for improved loft retention and reliable warmth in damp or humid conditions. Features of the Therm-a-Rest Questar 30 Sleeping Bag 650 Fill nikwax hydrophobic down: Absorbs 90% less water and dries 3 times faster without using dangerous pfcs W.A.R.M. Fit: With additional room for multiple positions (W.A.R.M.) Fit means this bag allows for various natural sleep positions while maintaining thermal efficiency SynergyLink connectors: Integrate the bag with a mattress for optimal efficiency and comfort; removable for versatility Zoned Insulation: Maximizes warmth and saves weight by intentionally placing fill where you need it most Box baffled construction: Uses mesh walls to maximize lo