Thermarest - Hyperion 20F/-6C

Built to provide a featherlight pack weight and high-performance warmth, the Hyperion 20F/-6C is among the lightest in its class without sacrificing an ounce of performance. The 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 Therm-a-Rest performance features, the Hyperion keeps your pack light, giving you the freedom to move quickly in the backcountry.

Features & Design:

• 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 maximize loft and minimize cold spots in key areas
• Comfort Fit: Ergonomic shape and longer zipper provide a more human-friendly fit than other ultralight bags
• Responsible Down Standard Certified: Certification that ensures the waterfowl in the down supply chain are treated humanely
• SynergyLink Connectors: Removeable ultralight straps create a secure bag-to-sleeping pad connection that optimizes the comfort and thermal efficiency of your entire sleep system. SynergyLink Connectors function best with regular sized sleeping pads that are 3 inches thick or less when inflated
• Zoned Insulation: Maximizes warmth and saves weight by intentionally placing fill where you need it most, 70% on the top and sides with 30% on the back
• Compression and storage sack included

Temperature Range:

• 32F/0C: Comfortable
• 20F/-6C: Limit
• -9F/-23C: Risk