I’ve officially crossed the 100-mile mark in the Altra Experience Flow 3 to see if Altra’s shift away from zero-drop actually works. While most Altras are known for a flat platform, this 4mm drop model is a game-changer for those who want the signature FootShape toe box with a little extra mechanical help. If you’ve struggled with Achilles strain or calf tightness in traditional zero-drop shoes, the Flow 3 might be the "missing link" in your rotation.