To celebrate the 10th anniversary of their 'Free' technology, Nike premieres a special homage collection of both new and revived models. Their 'Free' sole has received a complete overhaul, fuelled by scientific data and athlete insight. The new hexagon-shaped, strategically-engineered flex grooves through its arch helps ensure natural movement from wherever its wearer's foot strikes the surface. The body of the shoe is constructed from Nike's signature Flyknit technology, and consists of pink and purple fibres interwoven into one large, sock like shape. A volt flywire lacing system encloses the flat purple laces, and runs underneath the contrasting white swoosh printed on both sides. The shoe's finished with a printed brand tab to the tongue and a moulded purple base for improved support.