Ready for any backpacking adventure, the all-around Questar sleeping bag from Thermarest offers three-season comfort with its hydrophobic Nikwax Hydrophobic Down inflating 650.This is the award-winning, highly technical down sleeping bag you've always wanted. Thermarest has incorporated the comfort features that Therm-a-Rest bags are known for into this sleeping bag. SynergyLink connectors integrate the bag and mattress to ensure that theirZoned Insulation distribution technology places the insulating fill where you need it. The bag design has been perfected in the Therm-a-Rest in-house cold room to create the "W.A.R.M." fit, with enough volume to accommodate different sleeper positions without compromising the thermal efficiency of the bag. With 650 fill Nikwax Hydrophobic Down certified to the Responsible Down Standard, the all-season Questar is ready to follow you on your adventures. Compression bag and storage bag included.