PLAY ON THE EDGE. Play quick on your edges in the Kyrie Flytrap 4, a shoe that's lightweight, supportive and easy to move in. It has updated grip, lockdown and responsive cushioning. A large Zoom Air unit returns more energy than the previous model. The internal forefoot band stabilizes you over the footbed as you run the floor. Give Energy, Get Energy A large, rectangular Zoom Air unit under the ball of your foot provides a responsive feel with every step.