The JO Sports letters states in part: the boxing shirt described herein is, in my opinion, a training shirt worn and used by Mike Tyson in preparation for the 1984 Olympic Trials. 1984 training shirt worn by Mike Tyson at the Olympic Trials during training sessions. In the collar is a partially torn manufacturer’s tag from BMOC Casualwear. Size XL. Blue cotton and polyester with short sleeves. On the front are the words, 1984 UNITED STATES OLYMPIC BOXING TRIALS USA ABF. Shows modest wear. One of the earliest pieces of equipment from the career of Mike Tyson.