Thermarest Hyperion 20 UL
The Thermarest Hyperion 20 UL is an ultra lightweight down sleeping bag that offers high performance features. Ideal for fast and light adventures.
Featherlight whilst providing high-performance warmth, the Thermarest Hyperion 20 UL sleeping bag uses thermally-efficient box baffled construction in key areas to ensure warmth and comfort in an ultralight package. Designed with high-quality materials and Therm-a-Rest performance features, the Hyperion keeps your pack featherweight without sacrificing an ounce of performance. Compression sack and storage sack included.
More Help? For further assistance on choosing your down sleeping bag, we have an article explaining fill power, the pros and cons of down over synthetic insulation and more info on caring for your bag available to view here: Down Sleeping Bags.
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.
- 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 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: Maximises 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.
Specification
| Small | Regular | Long | |
| Colour | Deep Pacific | Deep Pacific | Deep Pacific |
| Weight (Standard) | 1 lbs 3 oz | 1 lbs 4 oz | 1 lbs 6 oz |
| Weight (Metric) | 0.55 kg | 0.58 kg | 0.63 kg |
| Width (Standard) | 27.5 in | 28.5 in | 29 in |
| Width (Metric) | 70 cm | 72 cm | 74 cm |
| Length (Standard) | 73 in | 80 in | 85 in |
| Length (Metric) | 185 cm | 203 cm | 216 cm |
| Height (Standard) | 4.5 in | 4.5 in | 4.5 in |
| Fits (Standard) | 66 in | 72 in | 78 in |
| Fits (Metric) | 168 cm | 183 cm | 198 cm |
| Girth, Shoulder (Standard) | 55 in | 57 in | 58 in |
| Girth, Shoulder (Metric) | 140 cm | 145 cm | 147 cm |
| Girth, Hip (Standard) | 48.5 in | 49.5 in | 51 in |
| Girth, Hip (Metric) | 123 cm | 126 cm | 130 cm |
| Girth, Foot box (Standard) | 40 in | 43 in | 46 in |
| Girth, Foot box (Metric) | 102 cm | 109 cm | 117 cm |
| Packed dimension (Standard) | 6 x 8 in | 6 x 8 in | 6 x 8 in |
| Packed dimension (Metric) | 15 x 20 cm | 15 x 20 cm | 15 x 20 cm |
| EN Comfort (C) | 0 C | 0 C | 0 C |
| EN Comfort (F) | 32 F | 32 F | 32 F |
| EN Limit (C) | -6 C | -6 C | -6 C |
| EN Limit (F) | 20 F | 20 F | 20 F |
| EN Extreme (F) | -9 F | -9 F | -9 F |
| EN Extreme (C) | -23 C | -23 C | -23 C |
| Fill material | 900 Fill Goose Nikwax Hydrophobic Down RDS | 900 Fill Goose Nikwax Hydrophobic Down RDS | 900 Fill Goose Nikwax Hydrophobic Down RDS |
| Fill weight (Standard) | 11.5 oz | 12.5 oz | 14 oz |
| Fill weight (Metric) | 0.33 kg | 0.36 kg | 0.40 kg |
| Shell fabric | 10D Nylon RipStop w/ DWR | 10D Nylon RipStop w/ DWR | 10D Nylon RipStop w/ DWR |
| Lining fabric | 10D Nylon RipStop | 10D Nylon RipStop | 10D Nylon RipStop |
| Zipper side | Left | Left | Left |
