Stretchy, fully reflective mesh upper; comfortable textile liningboostTM's energy-returning properties keep every step charged with an endless supply of light, fast energy(boosttm)

• synthetic and mesh
• boost's energy-returning properties keep every step charged with an endless supply of light, fast energy
• Primeknit upper
• Molded overlays and heel cage for added support
• offers the ultimate in high-wear durability

synthetic and mesh