To ensure the longevity of the Friedrich ankle boots, the vegetable-tanned cowhide leather should be regularly cleaned of dirt with a damp cloth and then treated with a suitable leather care product, such as leather milk or a conditioning lotion. To keep the leather supple and prevent cracking, the application of leather grease or wax, applied sparingly with a cloth, is also recommended. It is important to allow the nailed boots to dry slowly at room temperature after contact with moisture, away from direct heat sources such as radiators, to prevent the natural material from becoming brittle.