Weighing only 550g, challenge the cold and rest easy while moving through the mountains with the Therm-A-Rest Hyperion 20 UL Sleeping Bag. 

Built to provide a featherlight pack weight and high-performance warmth, the Therm-A-Rest Hyperion 20 UL Sleeping Bag 20F/-6C is among the lightest in its class without sacrificing an ounce of performance. The Therm-A-Rest Hyperion 20 UL Sleeping Bag uses thermally-efficient box baffled construction in key areas to ensure warmth and comfort in an ultralight package. Designed with high-quality materials and high performance features, the Hyperion keeps your pack light, giving you the freedom to move quickly in the backcountry. Storage sack and compression stuff sack included

• Ultralight:

  One of the lightest pieces in its class, the Therm-A-Rest Hyperion 20 UL Sleeping Bag 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.