Manny Pacquiao on Tuesday shrugged off concerns about his decision to return to boxing at the age of 46 as he prepares for next month's world welterweight title comeback against Mario Barrios.

The charismatic Filipino boxing icon stunned the sports world last month after announcing he would take on World Boxing Council (WBC) champion Barrios on July 19 in Las Vegas, four years after his last fight ended in a disappointing defeat.

Pacquiao, who won 12 world titles in eight different weight classes during a glittering professional career that began in 1995, told reporters on Tuesday that the glamor of championship boxing had prompted his return.