How Red Bull Avoided Flexi-Wing Protests At Azerbaijan Grand Prix

What did Red Bull do to it's new rear wing design to steer clear of a flexi-wing protest? They've been under the microscope recently by the FIA and Mercedes, but at Azerbaijan Red Bull brought out an all-new curved rear wing to help beat Lewis Hamilton. At the same time, Ferrari and Mercedes both tried differing tactics to try and claim top spot, so Jake Boxall-Legge looks at the various changes to Formula 1's sea of rear wings options.