The Therm-a-Rest Hyperion 20 UL Sleeping Bag is bag is lightweight and designed for backpacking and mountaineering. Compressible down insulation and a tapered mummy shape team up to keep weight and packed size to a minimum.
Shell Material: 10D Nylon Ripstop with DWR
Lining: 10D Nylon Ripstop ThermaCapture
Insulation: 900 Fill Goose Down NHD/RDS
Lightweight: The Hyperion is one of the lightest sleeping bags in its class
Unrivaled Packability: Lightweight materials and precise design allow for a smaller packed size than ever before.
Box Baffled Construction:To maximize thermal efficiency in key areas, we use mesh box baffles to boost loft and eliminate cold spots at the seams of the sleeping bag or quilt.
Comfort Fit: Ergonomic shape and longer zipper provide a more human-friendly fit than other ultralight bags.
SynergyLink™ Connectors: These removable straps integrate your mattress and sleeping bag to minimize heat loss and keep you secure through the night.
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.