We've loaded this winter bag with the performance-enhancing features Therm-a-Rest bags are known for, from SynergyLink Connectors to ThermaCapture Seams. Crafted with water-resistant 650 fill Nikwax Hydrophobic Down the Questar is ready for your next cold-weather adventure. The versatility and value of the Questar makes it a must-have for those looking to venture out after the temperatures drop. Storage sack and stuff sack included.