ThermaRest Hyperion 20 UL Sleeping Bag

* 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: 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.

Better Sleep Guarantee
All Therm-a-Rest sleeping bags and quilts are also covered by our Better Sleep Guarantee. When you wake up on a Therm-a-Rest sleeping bag or quilt, we're confident you'll wake up feeling better than ever. If you are not completely satisfied, return it within three months with the original receipt of purchase and they will give you a full refund- no questions asked.

Limited Lifetime Warranty
Every piece of Therm-a-Rest gear is designed to endure the rigors of your time in the backcountry. ThermaRest offers a Limited Lifetime Warranty on all products, except electronic devices, which have a 2-year Limited Warranty.