Captain America's shield

The circular design of Captain America's shield: a white five-pointed star on a blue circle surrounded by three concentric rings of red, white, and red.

Captain America's shield is a fictional item appearing in American comic books published by Marvel Comics. It is the primary defensive and offensive piece of equipment used by Captain America, and is intended to be an emblem of American culture.

The most well-known of his shields is a disc-shaped object with a five-pointed star design in its center, within blue, red, and white concentric circles. This shield is composed of a unique combination of Vibranium, steel alloy, and a third catalyst that has never been duplicated called Proto-Adamantium. It is virtually indestructible. It is as much an offensive weapon as a defensive one for Captain America. Cap uses it against his enemies, mainly, by throwing it at them and can perform mind-bogglingly impossible tricks with it.

Over the years, Captain America has used several shields of varying composition and design. His original heater shield first appeared in Captain America Comics #1 (March 1941), published by Marvel's 1940s predecessor, Timely Comics. The circular shield best associated with the character debuted in the next issue, Captain America Comics #2.