Ahead of its time in '99, the Air Max Sunder returns—and it still checks all the boxes. From the neoprene upper to the zipper closure, this innovative sneaker continues to break the mold. Unzip the shroud to reveal "6453," a nod to the last 4 numbers of Nike's office numbers around the world, which spell out N-I-K-E on the keypad.(Supplier Style:HF1199-700_ARC)