Nike Mercurial Superfly Academy DF Junior FG Football Boots These Nike Mercurial Superfly Academy DF Junior FG Football Boots have been engineered with a Dynamic Fit collar which helps lock your foot in place and supply a sock-like sensation, whilst the mixture of chevron and conical studs supply exceptional traction and the Nike Swoosh branding completes the stylish look. > Junior Football Boots > Full lace fastening > Cushioned insole > Moulded studs > Textured upper > Dynamic Fit collar > Mercurial detailing > Nike Swoosh branding > Upper/outsole: synthetic, inner: textile