 The ball provided a design for real flight, accuracy and control, and features Nike Aerowtrac grooves and a micro-textured casing.Nike RaDaR (Rapid Decision and Response) technology with a unique graphic upper is also utilised in the design to see the ball faster while the three-layer synthetic upper made for optimal touch.On 1 January 2015, the AFC named 47 match officials for the tournament, including referees, assistant referees, fourth officials, and reserve assistant referees.