Aero grooves create the clearly visible profile on the ball’s surface. The Grip’n’Groove profile circles round the entire ball in an optimal aerodynamic way. The integrated grooves provide unmatched flight characteristics, making this the most stable and most accurate adidas ball ever. The ground-breaking performance features of the adidas “JABULANI” have been confirmed in comprehensive comparison tests and checks in the wind tunnel at Loughborough University and the adidas football laboratory in Scheinfeld,