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Description
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 Standard 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 bag and 30% underneath. Down is not only lighter for its weight than synthetic insulation, but it is also much more compressible, so takes up less space in a rucksack or pannier. Both a compression stuff sack and a larger storage sack are provided. SynergyLink connectors allow a sleeping bag and Thermarest sleeping pad to be connected so that they both remain together during the night.
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Important Update for Our Canadian Customers
We regret to inform you that shopping on Sigma Sports is temporarily unavailable for customers based in Canada.
We understand how disappointing this may be and sincerely apologize for any inconvenience caused. Please rest assured that we are actively exploring solutions to resume service and find the best way to support our Canadian community.
We appreciate your patience and understanding during this time, and we look forward to welcoming you back as soon as possible.
If you require any further assistance, please reach out to the customer services team
— The Sigma Sports Team