Mercurial. Liable to sudden unpredictable change. Thats what the Nike Mercurial has always been about. After 20 years of speed the Vapor 12 Academy version has been re-engineered to adapt to todays player. Mesh upper wraps the foot for an adaptive fit. Textured NIKESKIN technology overlay provides precise touch at high speeds. Internal lining hugs the foot for support and comfort. Non-marking rubber outsole offers responsive traction on indoor/court surfaces.