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Therm-A-Rest
Therm-a-Rest Hyperion 20 UL Sleeping Bag
Curated 22 times by our Experts
6 added to cart1 purchased$529.95
Color: Deep Pacific

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Built to provide a featherlight pack weight and high-performance warmth, the Hyperion 20F/-6C is among the lightest in its class without sacrificing an ounce of performance. The 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 light, giving you the freedom to move quickly in the backcountry.
Key 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: Removeable ultralight straps create a secure bag-to-sleeping pad connection that optimizes the comfort and thermal efficiency of your entire sleep system. SynergyLink Connectors function best with regular sized sleeping pads that are 3 inches thick or less when inflated.
- 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.
- Storage sack and compression stuff sack included.
Color | Deep Pacific |
Shape | Mummy |
Temperature rating | 20° F |
Intended use | Backpacking |
Fill type | Down |
Weight | 1 lb 6 oz |
Sleeping capacity | 1 |
Age Group | Adult |
Is ultralight | Ultralight |
Shell | 10D Nylon RipStop w/ DWR |
Shoulder girth | 58 in. |
Hip girth | 51 in. |
Material | Nylon Ripstop |
Size | Long |
Packed Size | 6 x 8 in. |
Free shippingFree standard shipping for most items over $50 in the lower 48 states, $125 to ship orders to Alaska and Hawaii. Expedited delivery, if available, is an additional charge available at checkout. We do not ship internationally at this time.
Easy returnsWe offer 15-day peace of mind returns on most items in new condition that are in their original packaging. Items purchased used are not eligible to be returned. Read our return policy for more details.
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