Engineered for adventurers who demand performance without compromise, the Gruezi Biopod 8C DownWool Extreme Light 175 is an ultralight mummy sleeping bag tailored for summer applications where minimal weight and small pack size matter most. Designed for users up to 178 cm, this sleeping bag weighs only 450 grams and compresses down to a hand-sized compression sack (13 x 17 cm), making it perfect for trekking, bikepacking, and fast-and-light expeditions. Its standout feature is the innovative DownWool insulation — a unique hybrid that marries the warmth of down with the moisture-regulating and temperature-balancing qualities of wool, ensuring you stay dry and cosy even when conditions shift. Constructed with high-quality, PFC-free, water-repellent materials that meet OEKO-TEX standards and certified under the Green Codex, it represents a thoughtful choice for eco-conscious travellers. Designed for comfort and practicality, it features a pillow pocket, adjustable hood, and a footbox with ventilation system to help regulate temperature during warmer nights. Additional features like a two-way auto-lock zipper, zipper cover, white zipper for easy visibility, Feater loops, and integrated interior pockets boost usability whether you're out for a weekend escape or tackling multi-day missions. 

Key Features: 

• Summer applications: Ideal for warmer conditions and temperatures around 8°C.
• Ultralight construction: Weighs just 450g for lightweight travel.
• Regular mummy design: Close-fitting for optimised thermal efficiency.
• Small pack size: Compresses to 13 x 17cm for minimal space use.
• DownWool insulation: A blend of 70% high-quality RDS-certified duck down and 30% Alpine wool, ensuring warmth and moisture control.
• Pillow pocket: Insert a fleece jacket or clothing item for a stable pillow.
• Adjustable hood: Enhances insulation and reduces heat loss.
• Interior pockets: Keep essentials close at hand.
• Innovative, smooth-operating zipper: Allows for easy use and reduces heat loss.
  • Two-way zipper: Opens from both ends.
  • Auto-lock zipper: Prevents accidental opening.
  • Anti-snag zipper: Reinforced with robust zipper tape for smooth operation.
  • White zipper: Easy visibility in the dark.
  • Zipper cover: Prevents cold spots and heat loss.
• Foot ventilation system: Promotes airflow at the footbox.
• Footbox: Pre-shaped design gives room to move your feet.
• Feater loops: For attaching the Feater - The Feet Heater (sold separately) for additional insulation.
• Green Codex certified: Ethical wool sourcing and eco-conscious production.
• OEKO-TEX certified: Free from harmful substances for safe skin contact.
• PFC-free impregnation: Water- and dirt-repellent bio-based coating (BeSoDRY-ECO), free of perfluorochemicals.
• Eco-friendly dyes: Utilises non-toxic and Bluesign-certified BEMACRON dyes.
• Hand or machine washable: Easy care and maintenance.
• Compression sack/storage bag included: Sleeping bag packs down to approximately the size of a handful for compact storage and transport.