This information was borrowed from the WTSDA Dan Manual:
Members should exercise care in keeping their Dobohk clean and pressed at all times. It is important to give a good impression of our art. A neat appearance is important in this respect. A high degree of cleanliness should always be maintained among members. Members should take care to pay respect to their bodies and keep themselves clean. Fingernails and toenails should be clipped and kept short to prevent injury while fighting. All Dobohk will be folded properly upon entering and leaving the Dojang.
Do means "way of life" or martial arts as Do in Tang Soo Do and Bohk means "robe or training clothes." This type of Dobohk is worn universally in most kinds of martial arts but its origin can be traced to 600AD in Korea. A mural painting from that age illustrates a warrior’s hunting scene. The warrior wears the Do Bohk style robe, which was always white.
The Dobohk is not simple training clothing but traditionally has been treated and maintained in special ways as an instrument in achieving the goal of martial arts.
Students should be aware of ways of cleaning, carrying, caring and storing their Dobohk.