The bright yellow color and the prominent checkmark icon.

The ad opens with a yellow background and the Pegasus logo. A checkmark icon appears, followed by images of airplane seats and a smiling man looking at his phone. A yellow suitcase is shown. The text 'SANIYELER İÇİNDE CHECK-IN KOLAYLIĞI' appears. The ad transitions to show the Pegasus airline logo on a plane tail, then a smartphone displaying a mobile boarding pass with a QR code. The phone is shown at different angles. The ad ends with the Pegasus logo on a white background.