The three season Hyperion -6°c is one of the lightest pieces in its class, providing a featherlight pack weight and high-performance warmth.Materials10D Nylon RipStop900-fill Nikwax Hydrophobic Down™ : Stays drier and maintains loft 60 times longer than untreated down.FeaturesUnrivalled 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: Integrate the bag with a mattress for optimal efficiency and comfort; removable for versatility.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.Regular LengthEN Temperature RatingsComfort: 0°CComfort Limit: -6°CExtreme: -23°CA closer lookLightweight materials and precise design allow for a smaller packed size than ever before. The ergonomic Comfort Fit provides a more friendly fit than other ultra light bags. Zoned insulation maximizes warmth and saves weight by intentionally placing down where you need it most, and the Box Baffle Construction utilises mesh walls to maximise loft and minimize cold spots. Packed inside these baffles is 900 Fill RDS Nikwax Hydrophobic Down designed to absorb 90% less water, and dry 3 times faster without using dangerous PFCs.A SynergyLink Connectors enables you to integrate the bag with a pad for optimal comfort and thermal efficiency. These removable straps integrate your mattress and sleeping bag to minimise heat loss and keep you secure through the night.Comes with a compression sack and a storage sack. Therm-a-Rest Hyperion -6C UL Sleeping Bag - Regular