Thermarest Hyperion™ 20F/-6C Sleeping Bag
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. Storage sack and compression stuff sack included.
- 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.
- 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.
Small |
Regular |
Long | |
Color | Deep Pacific | Deep Pacific | Deep Pacific |
Weight (Standard) | 1 lbs 3 oz | 1 lbs 4 oz | 1 lbs 6 oz |
Width (Standard) | 27.5 in | 28.5 in | 29 in |
Length (Standard) | 73 in | 80 in | 85 in |
Height (Standard) | 4.5 in | 4.5 in | 4.5 in |
Fits (Standard) | 66 in | 72 in | 78 in |
Girth, Shoulder (Standard) | 55 in | 57 in | 58 in |
Girth, Hip (Standard) | 48.5 in | 49.5 in | 51 in |
Girth, Foot box (Standard) | 40 in | 43 in | 46 in |
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/32 F | 0 C/32 F | 0 C/32 F |
EN Limit (C) | -6 C/20 F | -6 C/20 F | -6 C/20 F |
EN Extreme (F) | -23 C/-9 F | -23 C/-9 F | -23 C/-9 F |
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 |
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 |