DownWool® is the perfect combination of down and wool. This blend offers outstanding insulation and an exceptionally wide temperature comfort range – even in high humidity. This is made possible by the mechanical bonding of 70% RDS-certified down and 30% Alpine wool – a patent-pending, durable, and washable combination.
"Why is wool so good in sleeping bags?"
Down: Best Insulation Performance
High-quality down offers excellent warmth with minimal weight. However, in high humidity (e.g., due to sweat or condensation), it clumps together and loses its insulating effect. This is where DownWool® 2.0 solves this problem. The added wool...keep reading.
New DownWool 2.0 from Spring 2026
With DownWool 2.0, Grüezi bag offers an even more powerful, sustainable insulation solution for demanding outdoor adventures.
The improved insulation performance of DownWool 2.0 is achieved through an additional production step in which the wool acquires a finer structure and significantly more loft. Read more in our guide below.
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