The Saucony Shadow 6000 Mercury is part of the Planet Pack. If you think about the colors of the universe, this colorway surely comes to mind. This retro runner made its first appearance in 1991 presented as a sneaker where a lot of miles can be made on. This edition has a special tongue which represents the distance of the planets. The sneaker is made out of suede and leather in a colorway that represents Mercury. Did you know that Mercury is the smallest out of all eight planets? Mercury is slightly bigger than our moon. Basically, a must have for the real space fans among us.