Performance-enhancing sunglasses?

First-round winners: Tailqua Clancy and Louise Bawden & fellow Oakley pal Bick Cummins (aka the Honey Badger) seeing the Rio Games through their through specially tinted Oakley shades: with heightened contrasts that accentuate some colors and downplay others.

Called ‘Green Fade’ they filter light and create what is essentially an artificial colour spectrum optimised for the sport played.

And a perfect example for a sports to wear them:ย beach volleyball onย Copacabana Beach. . .ย