The Nike Joyride Bead-Filled Shoes provide an even more specific, personalized experience than others. They follow in the footsteps of other Nike shoes, like the Air and React. In fact, these cushioned exercise shoes provide a fresh platform for you to run on. Following more than a hundred tests, these Nike exercise shoes were filled with thousands of TPE beads. These beads—made from a mixture of plastic and rubber—are confined to specific pods in the sole of the shoe. When you run, these Nike running shoes expand in all directions. Though TPE isn’t exactly an eco-friendly choice, it does create a footbed that is personalized to the sole of your own foot and how it strikes the ground. You might actually feel like you’re running on bubbles—if that’s possible.