The Dulok shaman Umwak designed and constructed Umwak's special glasses, which were a type of spectacles. He stated he had spent many years developing their design. Cords held the wooden frame of the glasses together. One lens was colored red, while the other lens was colored blue. Umwak asserted that these glasses could guide him through the Arbo Maze. In truth, however, Umwak's vision was not aided by them at all. After Umwak tripped on a rock and fell, the glasses were destroyed.