There are ten grades of cloth in the Bajawa region of Flores, ranked by motif size, type, and quality. Every weaver must ’’graduate’’ from each level before making a higher-grade textile. Lawo butu belong to the highest grade, and very few weavers are qualified to make them. Lawo butuskirts are sacred in Ngada culture, and some have been preserved in clan treasuries for over 200 years. Antiquelawo butu are priceless, particularly since new ones are so rare.