Rubber sole Design details take inspiration from the 2012 FK Racer. Flyknit upper uses stretchy yarns that form to your foot for support and breathability. Seamless collar sculpts the ankle for a track-inspired look. Plush and comfortable, Max Air cushioning has just the right amount of support. Paying homage to both heritage and innovation, the Nike Air Max Flyknit Racer goes beyond what's expected by blending an icon of the past with an icon of today. Incredibly light and stretchy Flyknit pairs with oh-so-soft cushioning for comfort you have to feel. Lace up and let your feet do the talking.