Nike Joyride Run Flyknit Men's Running Shoe Black/White Men's Size 12 Lightly worn in the gym only. Excellent condition. Why Beads? They’re soft, they’re bouncy, and they form the core of an innovative new cushioning system designed to help make all the ways you move feel easy—even running. A Softer Cushioning System We spent years obsessing the beads—finding the right size, shape and feel to deliver a soft, comfortable ride. Here’s how it works: Every time you take a step—or stride—10,000+ beads shape around your foot to provide personalized cushioning and support, before responsively bouncing back to propel you forward. Absorbs the Impact That soft ride doesn’t just go easy on your feet—it helps your whole body feel good. The Nike Joyride cushioning system offers 14% better impact absorption when compared to some of our most trusted running shoes (tested with Nike Air Zoom Pegasus 36 and Nike Epic React FK2).