1.1 ,This specification covers performance requirements for head protection used for training and competition in combative sports such as karate, wushu, and taekwondo, where normal contact between participants may be repeated, but is limited to a level that is not intended to produce injury. These activities typically take place in indoor or outdoor environments where the temperature is moderate. This specification recognizes the desirability of a lightweight and streamlined construction, and ventilation, however, it is a performance specification, and is not intended to restrict design.