Shop the Nike Zoom Fly 6 'Bright Crimson Lime Blast Mint Foam Cave Purple' FN8454-601. Upgrade your Sneakers collection today! Closure:lacing. Toe type:round toe. ZoomX foam, Nike's lightest and most durable, delivers maximum energy return with every step. The full-length carbon fiber plate increases efficiency and responsiveness. The thin rubber tread is designed for lightness and grip on the road.