Train hard and find your rhythm on the road. From the moment you lace up the Nike Men's Zoom Fly 4, the webbing on the upper and 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 for a secure, stable sensation. You've got goals to hit, lace up and fly towards a new best.