The Therm-A-Rest Hyperion 20 Degree Down Sleeping Bag is among the lightest in its class while still providing high-performance during backcountry pursuits. The bag uses thermally-efficient box baffled construction in key areas to ensure warmth and comfort in an ultralight package.

• Absorbs ninety percent less water & dries three times faster without using dangerous PFCs
• Lightweight materials & precise design allow for a smaller packed size than ever before
• Uses mesh walls to maximize loft & minimize cold spots
• Integrates w/ a mattress for optimal efficiency & comfort, removable for versatility
• Maximizes warmth & saves weight by intentionally placing fill where you need it most
• Certification that ensures that the waterfowl in the down supply chain are treated humanely
• Heat-trapping draft collar, zipper draft tube, snag-free zipper & cinch-able hood
• Compression stuff sack & storage sack included