Nike Zoom Fly 4 - Women'sTake it to the streets and find your tempo. From the moment you lace up, the webbing on the lacing system wraps around your foot for a secure feel from start to finish. The added flex feels highly responsive and secure with every step. A soft, breathable upper is combined with a stretchy collar for a sock like fit and a secure, stable sensation. You've got goals to hit, lace up and fly towards a new best.