It is an Olympics with a difference and no symbol of the times we are in is more visible than the mask. All participants - whether athlete, official, volunteer or journalist - are required to be masked up at all times, as part of Covid-19 safety measures. The incentive for athletes to win a medal? A reprieve of 30 seconds during the medallists' traditional photo shoot on the podium. Besides form and function, some masks are also proving to be a fashion hit. The Straits Times takes a look at some of the most eye-catching masks at Tokyo 2020.