Weighing just 580g, the Thermarest Hyperion Sleeping Bag offers the perfect balance between weight and warmth. Its thermally-efficient box baffled construction ensures maximum comfort in an ultralight design. With high-quality materials and Therm-a-Rest performance features, this bag keeps your pack light, allowing you to move swiftly in the backcountry. Includes storage sack and compression stuff sack.

Features: 

- Ultralight: One of the lightest pieces in its class, the Hyperion sets a new standard for high-performance outdoor equipment.- 900 Fill - Nikwax Hydrophobic Down™ : Stays drier and maintains loft 60 times longer than untreated down.- Unrivaled Packability: Lightweight materials and precise design allow for a smaller packed size than ever before.- Box Baffled Construction: Uses mesh walls to maximise loft and minimise cold spots in key areas.- Comfort Fit: Ergonomic shape and longer zipper provide a more human-friendly fit than other ultralight bags.- SynergyLink™ Connectors: Integrate the bag with a mattress for optimal efficiency and comfort; removable for versatility.- Zoned Insulation: Maximises warmth and saves weight by intentionally placing fill where you need it most, 70% on the top and sides with 30% on the back.- Responsible Down Standard Certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely.

Tech Specs: 

- Weight - 580g- Width - 72cm- Length - 203cm- Fits - 183cm- Girth, Shoulder - 145cm- Girth, Hip - 126cm- Girth, Foot Box - 109cm- Packed Dimensions - 15cm x 20cm- EN Comfort - 0 C- EN Limit - -6 C- EN Extreme - -23 C- Fill - 900 Fill Goose Nikwax Hydrophobic Down RDS- Shell Fabric - 10D Nylon RipStop with DWR- Zip side - Left