The Nike Zoom Mercurial 9 Superfly Academy SG PRO AC DJ5628 600 football boots are a training shoe for soft, natural grass surfaces, providing traction, stability, and speed. A NikeSkin upper provides a responsive touch and a secure fit, while a Flyknit collar stabilizes the ankle. Zoom Air cushioning supports explosive acceleration, while the SG-Pro outsole with studs and molded studs, along with Anti-Clog Traction technology, provides grip and reduces mud.