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. CENTURION REVIEW: We stock this bag specifically with the Spine Races in mind, but further for other mountain/ trail adventures where a -6 degree rating is key offering better protection than the Hyperion 32 for those who are planning to bivi. It packs down to the size of a small / Size 4 football and can be cinched in extremely tightly with the stuff sack and straps. It is however also an extremely comfortable, high quality bag. 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 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. 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. Responsible Down Standard Certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely. Storage sack and compression stuff sack included. SPECS Regular Fits: 183cm (6ft) Girth: 145cm at shoulder, 126cm at hip, 109cm at foot Fabric: 10D Nylon Ripstop w/DWR 10D Nylon Ripstop Therma-Capture Lining Fill: 900 fill GooseNikwax Hydrophobic Down, RDS Fill weight: 255g Stuffed size: 14 x 15cm (5.5 x 6in) Comfort rating: 5°C Comfort Limit: 0°C Extreme rating: -15°C Weighs: 462g (excludes storage & stuff sack) Long Fits: 198cm (6ft 6in) Girth: 147cm at shoulder, 130cm at hip, 117cm at foot Fabric: 10D Nylon Ripstop w/DWR 10D Nylon Ripstop Therma-Capture Lining Fill: 900 fill GooseNikwax Hydrophobic Down, RDS Fill weight: 275g Stuffed size: 14 x 15cm (5.5 x 6in) Comfort rating: 5°C Comfort Limit: 0°C Extreme rating: -15°C Weighs: 516g (excludes storage & stuff sack) VIDEO