Thanks for the info. I had never seen a hogu until probably the late eighties or early ninties.The first hogu were brought to Korea from Japan during an exchange trip in January 1961. The Korean Team brought back four hogu back to Korea. Soon thereafter, hogu became mandatory equipment at all KTA tournaments in Korea, along with shin and forearm guards, and cups. The AAU (predecessor to the USTU) required the use of hogu from the very first US National Taekwondo Championships held in 1975. Head gear became mandatory in 1986 for USTU and WTF, after a competitor in Florida fell during a tournament, hit his head, and subsequently died.
Daniel