Metallic refers to a material that represents or resembles metals such as gold, silver, or pewter. Metallic articles are very shiny, and often embellished by metal materials.
About Tennis Shoes:
Sneakers with thick, hard soles that are designed to accommodate the hard surface of a tennis court. They differ from running shoes in that they are are flat on the bottom with a shallow tread that grips the court, yet allows sideways movement.