NIKE Kids JR Mercurial Vortex III Fg Black/White Electric Green Soccer Cleat 3.5 Kids US Synthetic Imported Vortex III is designed with an upper made from a thin, flexible synthetic material - giving you an almost barefoot feel. The upper has been given raised horizontal grooves, to increase the level of friction between the boot and the football. You get an improved touch on the ball and a closer, more precise and natural touch when dribbling, passing or shooting in high speed. The front part of the boot, has been designed with a low profile to allow you to get under the ball for even better shots and passes. This FG boot is made for firm ground surfaces such as natural grass.