Arnis. Arnis is the national martial art sport of the Philippines emphasizing weapons based fighting. The primary weapon in arnis is the rattan stick, which varies in size, but is usually 28 inches (71 cm.) in length. Both single and double stick techniques are taught in schools in physical education programs, as well as unarmed defenses against the stick, and against bladed weapons. Arnis also includes hand to hand combat, joint locks, grappling, and weapon disarming techniques. Other aspects of the art include espada y daga (sword and dagger fighting), sinawali (double stick weaving patterns), and tapi-tapi (locking drills with the stick). In addition to partner drills, Modern Arnis includes the use of anyo (kata), solo forms both with and without the stick. Practitioners are called arnisadors. It is one of the oldest Philippine sports, the origin of which can be traced back to native fighting techniques during conflicts among the various Prehispanic Filipino tribes.