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Engineered for serious backcountry performance, this premium sleeping bag delivers exceptional warmth, comfort, and sustainability in cold-weather conditions. Designed for mountaineering and demanding outdoor use, it combines advanced insulation technology with eco-conscious materials to ensure reliable thermal efficiency without compromising on environmental responsibility.
Key Features & Specifications:
- Chevron baffle construction keeps down evenly distributed, preventing migration and maintaining consistent loft for optimal warmth
- 800-fill-power hydrophobic down, RDS-certified and PFC-free, provides high-performance insulation with excellent moisture resistance
- Shell and liner fabrics made from 100% recycled materials and certified to the Global Recycled Standard (GRS), with bluesign® approval for sustainable production
- Redesigned draft collar and draft tubes minimize heat loss by blocking cold air infiltration
- Offset main zipper creates an improved thermal seal for enhanced heat retention
- Thermo Gills™ multi-stage ventilation system allows controlled airflow to regulate temperature on milder nights
- Stretch knee construction improves comfort and mobility, especially for side sleepers
- Waterproof/breathable Toester™ footbox with synthetic insulation protects against condensation and keeps feet warm and dry
Technical Specifications:
- Temperature rating: 0°F (-18°C)
- Tested comfort: 14°F | Tested lower limit: 0°F (ISO 23537)
- Insulation: 800-fill-power down
- Shell: Recycled nylon | Lining: Recycled polyester
- Shape: Mummy design for thermal efficiency
- Weight: 3 lbs 2 oz to 3 lbs 9 oz (size dependent)
- Fits up to 66″–78″ with varying girth measurements by size
- Left-side zipper configuration
- Compression volume: 8.9–9.9 liters depending on size













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