With one of the most forward-thinking designs we've seen in a shoe, the Nike Air Zoom Zero piqued our playtesters' interest as soon as they opened the box. The unique curved outsole of these shoes creates a rocking motion to better utilize natural momentum shifts during play. The bootie-constructed canvas upper hugged our playtesters' feet tightly and provide exceptional stability, although it may girdle wider feet too snugly. The real highlight of these shoes was the full-length Air Zoom unit, which seemed plush while still allowing our testers to feel extremely connected to their movements, and that is no easy feat (pun intended). Players should note that the durability is going to be more in line with other lightweight shoes. Don't be misled by the stability and cushioning; these are performance shoes. As the Nike Air Zoom Ultras fade into the obscurity of tennis shoes past, we think players will be delighted to have the Air Zoom Zeros added to the Nike lineup.