Hyperion 45 Down Sleeping Bag

SKU:
AW21466V
Insulation Type:
Down
Weighs:
370g (Regular size)
Fill Power:
900+
Fill Weight:
152g (based on size Regular)
Down Treatment:
Hydrophobic
Comfort Limit:
7°C
Zip Length:
3/4 Length
Zip Position:
Left Zip
UOG Top Picks:
Yes

UOG TOP PICK - Thermarest Hyperion 45, 32, 20 Sleeping Bags - these three bags cover from +7C to -6C and use 900+ Fill Power down, there are some effective features that make these bags stand out from the crowd. The newe…

From: £239.99
RRP: £289.99
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Product Details

Jump to: Our Verdict / Features / Specifications

UOG TOP PICK - Thermarest Hyperion 45, 32, 20 Sleeping Bags - these three bags cover from +7C to -6C and use 900+ Fill Power down, there are some effective features that make these bags stand out from the crowd.

The newest and lightest Hyperion in the range is a WORLD EXCLUSIVE to us here at Ultralight. Sticking to the design this is an ultra lightweight and packable mummy sleeping bag for summer camping and backpacking. One of the lightest bags available, the 900-fill, water-resistant Nikwax Down sleeping bag keeps you warm and comfortable. 

Thermarest says:

The Hyperion 45F/7C sleeping bag is among the lightest in its class while still providing high-performance during backcountry pursuits. The bag uses thermally-efficient box baffled construction in key areas to ensure warmth and comfort during backcountry pursuits. Designed with high-quality materials and Therm-a-Rest performance features like SynergyLink™ Connectors, the Hyperion keeps your pack featherweight without sacrificing an ounce of performance. Storage sack and compression stuff sack included.

Our Verdict

Therm-a-Rest's Hyperion 45 Down Sleeping Bag is a world exclusive for us. This is the lightest and most compact bag Thermarest have produced and there was only one place they wanted to sell it. Building on the success of the Hyperion range this 45 version weighs just 370g and has a comfort limit of 7°C. This outstanding warmth to weight ratio is achieved by using the highest quality responsibly sourced down expertly zoned in a box wall construction. The bag is lined with ThermaCapture to trap body heat keeping you nice and toasty.

The bag only has a half length zip which saves weight and increases warmth but reduces venting ability. The bag comes with tiny (potentially flimsy) straps to attach the bag to a sleeping mat to reduce the chance of you wriggling off your mat in the night. These can be removed if you want to save a few grams. As you would expect with such a lightweight bag the pack size is very small.

- Reviewed by Ultralight Outdoor Gear

Features

  • 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
  • Unrivaled 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
  • ThermaCapture™ Lining: Bag is lined to trap radiant body heat and retain warmth without adding bulk or weight
  • 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

Specifications

Small:

  • Fits: 168cm (5ft 6in)
  • Girth: 140cm at shoulder, 123cm at hip, 102cm at foot
  • Fabric: 10D Nylon Ripstop w/DWR 10D Nylon Ripstop Therma-Capture Lining
  • Fill: 900 fill GooseNikwax Hydrophobic Down, RDS
  • Fill weight: 116g
  • Comfort rating: 11°C / 52°F
  • Comfort Limit: 7°C / 45°F
  • Extreme rating: -6°C / 21°F
  • Weighs: 338g (excludes storage & stuff sack)

Regular

  • Fits: 183cm (6ft)
  • Girth: 145cm at shoulder, 126cm at hip, 109cm at foot
  • Fabric: 10D Nylon Ripstop w/DWR 10D Nylon Ripstop Therma-Capture Lining
  • Fill: 900 fill GooseNikwax Hydrophobic Down, RDS
  • Fill weight: 152g
  • Comfort rating: 11°C / 52°F
  • Comfort Limit: 7°C / 45°F
  • Extreme rating: -6°C / 21°F
  • Weighs: 370g (excludes storage & stuff sack)

Long

  • Fits: 198cm (6ft 6in)
  • Girth: 147cm at shoulder, 130cm at hip, 117cm at foot
  • Fabric: 10D Nylon Ripstop w/DWR 10D Nylon Ripstop Therma-Capture Lining
  • Fill: 900 fill GooseNikwax Hydrophobic Down, RDS
  • Fill weight: 188g
  • Comfort rating: 11°C / 52°F
  • Comfort Limit: 7°C / 45°F
  • Extreme rating: -6°C / 21°F
  • Weighs: 422g (excludes storage & stuff sack)

Help and advice:

Thermarest Hyperion 45 Down Sleeping Bag

Hyperion 45 Down Sleeping Bag

From: £239.99
RRP: £289.99
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