The Nike MercurialX Proximo Indoor/Court Football Shoe brings explosive speed to the small-sided game with a locked-down fit and low-profile traction. Locked-Down Fit The Dynamic Fit collar fits over your ankle for a seamless fit that locks your foot in place. The tongue-less Flyknit upper with Flywire cables seamlessly integrates areas of high breathability, stretch and support. Barefoot Touch The one-piece upper is made of micro-textured Flyknit for a barefoot touch.