Engineered for severe winter expeditions, this insulated sleep system maintains effective warmth when ambient temperatures drop to -20°C. The tapered mummy architecture reduces internal volume, ensuring efficient heat circulation while minimizing bulk during long overnight stays in frozen landscapes.
A filling of 90 percent white duck down delivers substantial thermal performance without adding unnecessary mass. Key construction elements include a drawstring hood designed to seal out drafts around the neck and additional loft concentrated in the toe box to shield extremities from conductive heat loss on icy ground.
The exterior utilizes a rugged 400 denier ripstop weave with moisture-blocking properties to resist wind chill and light precipitation. Despite its robust weather protection, the entire unit remains highly portable, easily compressing into the bundled carrying sack for streamlined backpack organization or compact vehicle storage.
Core Specifications
- Shell Fabric: 400T Ripstop Nylon with moisture barrier
- Insulation Type: 90% White Duck Down
- Cold Weather Threshold: Certified to -20°C
- Inner Dimensions: 210 cm length by 80 cm width
