Cotton is the most common fibre used in weaving in Thailand, especially Chiang Mai grown cotton which is of two types: one which produces white tufts ad one which produces light brown tufts, the latter being known locally as "fai tun" or "moi rat cotton".

Even though locally grown cotton gives a lower yield, has coarser threads an is light brown in colour rather than white, it has a special quality which makes it suitable for weaving textiles as it can be used in any season.

It is cool in the summer and warm in the winter: as Chiang Mai people say, it breathes.