Therm-a-Rest Hyperion 20F/-6C - Small

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Sale price£407.15 Regular price£479.00


The Therm-A-Rest Hyperion™ 20F/-6C Sleeping Bag is designed to provide high performance warmth in a featherlight pack weight. Therm-A-Rest achieve this using their high quality materials and by using a thermally-efficient box baffled design and construction. This gives the Hyperion 20F/-6C sleeping bag a comfort rating of 32F/0C and a transition range of 20F/-6C, whilst keeping your pack light and giving you more freedom on your adventures and expeditions.

Storage sack and compression stuff sack included.


  • Winner of the 2019 BACKPACKER Editor's Choice Award.
  • 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.
  • Unrivalled Packability: Lightweight materials and precise design allow for a smaller packed size than ever before.
  • Box Baffled 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.
  • SynergyLink™ Connectors: Integrate the bag with a mattress for optimal efficiency and comfort; removable for versatility.
  • 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.
  • Responsible Down Standard Certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely.


  • Size: Small
  • Colour: Deep Pacific
  • Temperature Rating:
    • Comfort Range: 0 C / 32 F
    • Transition Range: -6 C / 20 F
    • Risk Range: -23 C / -9 F
  • Weight: 1 lb 3 oz  / 0.55 kg
  • Packed Dimensions: 6 x 8 in / 15 x 20 cm
  • Ready Dimensions: 27.5 x 73 x 4.5 in
  • Fit Measurements:
    • Height: 66 in / 168 cm
    • Girth, Shoulder: 55 in / 140 cm
    • Girth, Hip: 48.5 in / 123 cm
    • Girth, Foot box: 40 in / 102 cm
  • Fill Material: 900 Fill Goose Nikwax Hydrophobic Down RDS
  • Fill Weight: 11.5 oz / 0.33 kg
  • Shell Fabric: 10D Nylon RipStop w/ DWR
  • Lining Fabric: 10D Nylon RipStop
  • Zipper Side: Left

Base Camp Food are an official UK Retailer for Therm-A-Rest. 

Click here to view our complete Therm-A-Rest product range.

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