Kyrie Irving, although he spent just one season at Duke, still has love for the Blue Devils.
On his Instagram, Irving showcased a custom pair of Duke Kyrie 2s, identified by SLAM Magazine as the Kyrie 2 "Duke" PE".
As you can see in the picture below, the left shoe has the letters "D" and "U" on the heel and the left shoe has the letters "K" and "E". The left tong has the number "1" - the number Irving wore at Duke - patched on. The number customization may be a special feature made just for Irving's personal pair.
Here's a more detailed look at the shoe via Duke Basketball: