Лао
In the middle of the 13th and 14th centuries, Thai people (from Sukhothai Kingdom, known as Thailand today) and Lao people (from Lan Xang, known as Lao today) had adopted the wearing of sompot chong kben from Khmer. They considered it superior for enjoying the special occasions, and useful for royalty or monarchy in their local royal palace, the Thai people and Lao people had used sompot chong kben in a similar way.