Built to provide a featherlight pack weight and high-performance warmth, the Therm-a-Rest Hyperion Sleeing Bag 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.
- Stays drier and maintains loft 60 times longer than untreated down
- Lightweight materials and precise design allow for a smaller packed size than ever before
- Uses mesh walls to maximize loft and minimize cold spots in key areas
- Ergonomic shape and longer zipper provide a more human-friendly fit than other ultralight bags
- Maximizes warmth and saves weight by intentionally placing fill where you need it most