Modern Arnis is the system of Filipino martial arts founded by the late Remy Presas as a self-defense system. His goal was to create an injury-free training method as well as an effective self-defense system in order to preserve the older Arnis systems.

One of the characteristics of Filipino martial arts is the use of weapons from the very beginning of training. Modern Arnis is no exception. The primary weapon is the rattan stick, called a cane or baston (baton), which varies in size, but is usually about 28 inches (71cm) in length. Both single and double stick techniques are taught, with an emphasis on the former; unarmed defenses against the stick and against bladed weapons (which the stick is sometimes taken to represent) are also part of the curriculum.

Training covers empty-hand self-defense (striking, locking, throwing, etc.) as well as the trademark single and double stick techniques of the Filipino martial arts. 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.

Sited from:
http://en.wikipedia.org/wiki/Modern_Arnis