NIKE JR Mercurial Vapor X FG Soccer Cleats Leather-And-Synthetic The tongue-less upper features ultra-thin Teijin microfibre synthetic leather that conforms to the shape of your foot for a second-skin fit. The allover micro-textured upper helps grip the ball for excellent touch, and All Conditions Control (ACC) technology provides consistent control in wet or dry conditions. The Vapor traction pattern features direct-inject blades that dig and release quickly for exceptional traction in any direction. The forefoot grip zone, inspired by track spikes, provides toe-off traction for extra bursts of speed. Firm-ground (FG) studs for use on short-grass pitches that may be slightly wet but rarely muddy.