Nike Free Run iD Running Shoe FREE TO CHOOSE YOUR FLEXIBILITY Completely customizable from top to bottom, the Nike Free Run iD Running Shoe lets you build exclusive hybrids of the Free 5. 0 and Free 3. 0 for personalized support, flexibility and cushioning. Choose the upper and midsole combination that meets the demands of your run, then choose from a wide-ranging color palette to create a look that's truly your own. CHOOSE AN UPPER For a snug fit and more support, opt for the Free 5. 0 upper with the dynamic fit lacing system, which tailors the shoe perfectly to your foot. For enhanced breathability and a lightweight feel, take advantage of the super-minimal Free 3. 0 upper. PICK THE MIDSOLE Select the Nike+ ready Free 5. 0 midsole for a supportive, cushioned ride, or experience a more barefoot-like feel with the Free 3. 0 midsole, a lighter and more flexible option. ADD BOLD COLOR Bright and vivid, or subtle and streamlined? You choose your colors on the upper, Swoosh, laces and midsole.