The Giant Quiver is a recurring item in the The Legend of Zelda series. As its name suggests, Giant Quivers serve as upgrades for Big Quivers found in various games. In most games, two Quiver upgrades are available, of which the Giant Quiver will always be the last obtained regardless of where it is obtained.
The Giant Quiver can be won by getting a sufficiently high score in either the Town Shooting Gallery or the Swamp Shooting Gallery, whichever Link beats second. It allows Link to carry a maximum of 50 arrows.