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Kollen Norwegian Wool Shaft – Warmth Upgrade
This shaft will replace the standard version.
The Norwegian Wool Shaft is a limited-edition upgrade designed to make your Kollen boots even warmer. Lined with Norwegian wool and built like a puffer jacket for your legs, it keeps snow and cold out—while locking warmth in.
Color: Fjord Blue
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Pairs well with
Kollen Modular Winter Boots
Kastel Wool Socks Melange Beige
Wool Insole Norwegian Wool
Product Description
Make Your Kollen Boots Even Warmer
The Norwegian Wool Shaft is a limited-edition upgrade designed to enhance the winter performance of your Kollen boots. Lined with warm Norwegian wool, this shaft keeps snow and cold out while locking in heat—like a puffer jacket for your legs.
This shaft replaces the one originally included with your boots. You’ll get one shaft setup in total—upgraded for warmth and designed for everyday use in colder conditions.
Easy to attach with the built-in zipper and Velcro closure at the cuff. The fit is secure, snug, and built to handle real Nordic winter.
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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