Experience even more fun on every run: the new U-TECH Aion 3 - maximum comfort, more sustainable than ever before. With 40% more full-length U-TECH™ foam, you dive smoothly into the midsole and are catapulted directly into the next step thanks to the new Biological U-TECH™ technology. The U-TECH Aion 3 is the most sustainable True Motion running shoe ever, with increased durability and even more fully recycled materials. In other words, this update packs a punch.