In 1984 during the Olympic Games in Los Angeles,  Adidas released Adidas LA Trainer. This was the first trainer which used a patented peg cushioning system. It is called the Vario Shock Absorption System. This system used coloured heel pegs to let athletes customise their cushioning to fit their weight, running surface, and style. It allows the user to swap plugs to get hard, medium, or soft cushioning. At that year, Adidas LA Trainer was the top line training shoe and super popular. Comeback After Retired LA Trainer retired from Adidas catalog, after being popular for a long time. Adidas brought back this trainer again for a special edition to…