With a wider surface area than previous versions, the Zion 4 uses a cupsole frame for added stability, helping you feel grounded no matter how you're moving.<br /><b>Built for High-Flying Dunks</b><br />A removable drop-in Cushlon 3.0 midsole helps support your explosive upward movements, letting you go full force until the final buzzer.<br /><b>Air-Cushioned Comfort</b><br />Full-length Air Zoom unit helps provide responsive cushioning for when you fly to the hoop and land back on earth.<br />