Phu Thai marriage customs are distinct from those of their Thai and Lao neighbors. Their moral ethics and standards are much stricter. Court cases and divorce are rare among the Phu Thai, as opposed to what has become the norm in tribal life. Intermarriage with the Thai is rare, but there have been some cases of intermarriage with the Laotians. Distinctive customs and dress characterize the Phu Thai.
Women are distinct in their dress, wearing black blouses and skirts trimmed with red.
They also wear heavy silver necklaces and wrist bracelets similar to those worn by the Hmong tribe's women. The Phu Thai are generally very industrious. The women are known for their fine quality hand-woven silk made with unique, colorful designs. Their specialty is striped skirts made with plain colors on a dark brown or purple background. They also do intricate needlework on cotton blankets, shawls, and pillows.