What are the sizes of styrofoam balls?

Styrofoam balls come in a variety of sizes, typically ranging from small (about 1 inch in diameter) to large (up to 12 inches or more). Common sizes include 1", 2", 3", 4", 6", 8", and 10". These balls can be used for various crafts, decorations, and educational projects, allowing for versatile applications depending on the size chosen.