Hyperion 20F/-6C LONG sleeping bag

The Thermarest Hyperion 20F/-6C long sleeping bag combines all the performance you expect from a down bag when seeking warmth, compactness and low weight. The Hyperion 20F/ -6C sleeping bag suits trekkers facing low temperatures for whom every gram counts.

Unrivalled light weight and compactness in this temperature range

The Thermarest Hyperion-20F/-6C sleeping bag is the lightest sleeping bag in our -1°C to -5°C range. Weighing just 630 grams, it is the featherweight of its class.
Its goose down fill with 900 Cuin fill power also delivers outstanding quality, offering the highest fill power available on the market. Once taken out of its compression sack, your Hyperion sleeping bag will feel like your duvet at home and provide excellent sleeping comfort.
These materials allow the bag to be compressed as much as possible when packed, without damage. Once rolled up, this sleeping bag becomes very small and fits easily at the bottom of your backpack.

Outstanding thermal performance for cold nights

The 900 cuin goose down makes this sleeping bag exceptionally lofty, ultralight and extremely compact, while delivering impressive thermal performance.

• The down used in the Thermarest Hyperion 20F/-6C sleeping bag is Nikwax Hydrophobic Down. Treated against moisture, it stays dry, absorbing 90% less moisture than conventional down and drying 3 times faster. This technology also lets the down retain its loft 60 times longer than untreated down.
• The Hyperion sleeping bag has a ThermaCapture lining, which reflects body heat to retain it more effectively.
• The fill is distributed differently by zone to maximise warmth where the body needs it most.
• Mesh baffles maintain loft and prevent cold spots.

The down is RDS-certified (Responsible Down Standard), sourced with respect for the environment and animal welfare. The hydrophobic treatment is guaranteed free from hazardous perfluorinated compounds (PFCs).

The Thermarest Hypérion 20F/-6C long sleeping bag features:

• A protective zip flap
• Hood with drawcord adjustment
• Removable SynergyLink connectors: attach your sleeping bag to your mat for maximum comfort

It comes with a storage sack and a compression sack.

The Hyperion also comes in a less warm but even lighter version: the Hyperion 0 sleeping bag

A shorter version is also available: the Hyperion 20F/-6C regular sleeping bag
 

Discover the Thermarest Hypérion -6 sleeping bag in this video:

 
Other features:

Fill: 900 cuin RDS goose down with Nikwax hydrophobic treatment

Outer fabric: 10D ripstop nylon

Lining: 10D ThermaCapture ripstop nylon