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- Kollen Norwegian Wool Shaft – Limited Edition
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Product Description
Built for colder winters
The Kollen Norsk Ull Shaft is made for those who need more warmth. It attaches securely with Velcro at the cuff—just like the original Kollen shaft—but comes lined with naturally temperature-regulating Norwegian wool.
The outer layer is water-resistant polyester. Inside, the wool lining keeps you warm, even in wet conditions. A zipper lets you take it on and off in seconds.
It’s a simple winter upgrade. For those who stay out longer, walk further—or just really feel the cold.
Innovations
Nature Lab is our initiative to research, test and develop shoes in a more sustainable way. This shoe uses the following innovations:
#1 – Modularity
At Kastel, we believe one shoe can do more. By designing modular components—like the removable shaft on Kollen—we make shoes that adapt to your needs. Add warmth and coverage when needed. Remove it when you don’t. This is just the beginning of how we’re rethinking footwear to extend use, reduce waste, and keep you comfortable through it all.
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