These are the fibers of plant or animal origin. To cite a non-exhaustive list: cotton, leather, linen, hemp, silk, wool ... They are fibers that allow the simple and natural breathing of the fabric, which well maintained, allows the durability of a garment and its biodegradability at the end of its life cycle. This is a plus when they come from organic agriculture.
At Adalma, these are the fibers that we prefer, and that we favor above all others for our collections.