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Thermarest Hyperion 32 UL Regular Sleeping Bag


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Hyperion 32 UL Regular Sleeping Bag
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Product ID: 1372913

Thermarest Hyperion 32 UL Regular Sleeping Bag

The Hyperion 32 UL Regular Sleeping Bag from Thermarest is a premium 900 fill goose down bag that is ideal for camping, bikepacking and travelling as it offers fantastic warmth for its weight and is very compressible for easy packing. The down used has been treated with Nikwax, making it hydrophobic so it won’t absorb water and helping it loft up to 60 times as much as non-treated down for better insulation. Zonal distribution of the insulation, with 70% on top and 30% underneath, helps maximise the bag’s warmth whilst keeping weight and bulk as low as possible. Box wall baffles hold the down in place and prevent cold spots from forming.

All the goose down used is Responsible Down Standard Certified for peace of mind regarding the treatment of the birds and there is a large storage bag and a compression stuff sack provided with the sleeping bag.


  • 900 fill Nikwax Hydrophobic Down™: Stays drier and maintains loft 60 times longer than untreated down
  • Unrivalled packability: Lightweight materials and precise design allow for a smaller packed size than ever before
  • Box baffled construction: Uses mesh walls to maximise loft and minimise cold spots in key areas
  • Comfort fit: Ergonomic shape and longer zip 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: Maximises warmth and saves weight by intentionally placing fill where it’s needed most, 70% on the top and sides with 30% on the back
  • Goose down
  • Responsible Down Standard Certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely
  • Additional features: Snag-free zip and cinchable hood
  • Storage sack and compression stuff sack included
  • Left zip only
  • Width: 72cm
  • Length: 203cm
  • Fits: 183cm
  • Shoulder girth: 145cm
  • Hip girth: 126cm
  • Packed dimensions: 15cm x 20cm
  • Manufacturer’s claimed EN comfort rating: 0°C
  • Manufacturer’s claimed EN limit rating: -6°C
  • Manufacturer’s claimed EN extreme rating: -23°C
  • Fill weight: 250 grams
  • Manufacturer’s claimed weight: 460 grams

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