The supports on which the reserves are made vary according to the raw material used and its treatment, and according to the structure of the fabric. They reflect availabilities in the natural environment but also aesthetic and cultural choices.

Two large groups of reserve can be seen : reserves that are tied and others that are sewn. They can be made without a mark or, on the contrary, follow a pattern inscribed beforehand in or on the fabric. The link itself is by nature variable : A thread of cotton, a strand of raffia, a strip of plastic or rubber, etc.