Vegetable-tanned calf leather lining is breathable, allows air circulation, has high moisture absorption, provides warmth in winter and cooling in summer. Additionally, it is tanned without heavy metals, hygienic, and neutralizes odors.

Natural cork insulates, is breathable, allows air circulation, absorbs moisture, conforms to the foot, and yet remains dimensionally stable. It is also hygienic and neutralizes odors.

Merino loden is extremely breathable and can absorb a lot of moisture. It is water-repellent and durable. It provides warmth in winter and cooling in summer. Additionally, it is easy to care for, hygienic, and neutralizes odors.