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 Penny Loafers:
Penny Loafers are a style of Loafers which features an additional strap on the upper portion of the shoe above the toes. This design is referred to as Penny Loafers because traditionally a penny was placed in a slit on the strap to bring the wearer good luck.