The Co do not know how to weave, so they buy cloth and garments mostly from the Kinh and the Xo-dang. According to tradition, men leave their upper torsos naked and cover their lower torsos with loincloths. Women wear skirts and short sleeved shirts. In winter, they cover up with blankets. They like to wear necklaces, bracelets and earrings made from copper or silver and, especially, from glass beads.
Women often tie colourful bead strings around their waists.
The Co old people are respected by all. The elderly man who plays the role of village chief, must be knowledgeable, experienced in production, well-behaved and enjoys the trust of the villagers. He also belongs to the lineage who have contributed to the building of the village. In the past, the lineages of the Co did not have private names, so they all took the family name of the Dinh. In recent decades, they have taken the family name of Ho, after President Ho Chi Minh.