The Black Hmong women are identified by the dark indigo color of their clothing which stands in contrast to their accessories and brightly-colored embroidery. Their legs are wrapped with a velvet type cloth to keep them warm in the winter months.
Hmong have high cheekbones and broader faces, in comparison to the Vietnamese. It is believed they migrated to this region from southern China in the 18th century. Within the general Hmong ethnic group, there are several subdivisions - Black Hmong, White Hmong, Flower Hmong, among others.
Read more about the hill tribes and trekking in Sapa.