Nike Flystepper 2K3 PRM Hyper Cobalt (677473-400). We have many different styles of authentic Nike Flystepper 2K3 PRM shoes at a good and cheap price at our online store. Find out your limited sneaker at Kicks-Crew today! Style: Nike Flystepper 2K3 PRM, Series: Hyper Cobalt, Product Code: 677473-400.