Therm-A-Rest's most versatile three season synthetic sleeping bag just got better. The three-season Saros sleeping bag is the perfect choice for backcountry trips that start with a shaky forecast. Now redesigned with ThermaCapture™ Seams to boost the bag’s warmth without adding bulk, the Saros includes the eraLoft™ synthetic insulation, which is quick-drying and weather resistant, making it ideal for backpacking and mountaineering in wet weather from spring through fall. The SynergyLink™ Connectors also integrate the Saros with your mattress to ensure superior comfort with efficient warmth and the freedom to move as you like for the best night’s rest possible. Stuff sack and storage sack included.