Therm-a-Rest Hyperion 20 UL Long (10724)

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 B... moreaffled 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.

Thermarest Hyperion 20 UL Large Sleeping Bag Offering a huge amount of warmth, Thermarest’s Hyperion 20 UL Large Sleeping Bag is filled with 900 fill Nikwax hydrophobic goose down. This down has been treated to stay dry and thus loft more effectively than standard down, providing greater warmth for its weight. All the down used is Responsible Down... moreStandard Certified, ensuring that the birds used in production have been treated humanely. As well as using premium down, the bag has a box wall construction to keep the down from migrating and to prevent cold spots from forming. The fill has also been zoned to provide more insulation where it is needed most, with 70% of the down on top of the