Karhu Synchron "Ruska Pack"

Suede: leather cut from the back, while the fibers remain on the surface, suede is less prone to damage than nubuck.

Polyurethane foam: is one of the best thermal insulators, is lightweight, tough and windproof.

Rubber: The rubber outsole provides excellent grip and durability on a variety of surfaces. Thanks to its elasticity, it absorbs shock, increasing comfort when walking or running.