Use this set of 2 foam balls for kids' crafts, modeling, science projects, or party decorations. The smooth polystyrene foam allows you to easily customize using stencils, paint, twine, and ribbon, your mind is the only limitation! Create one-of-a-kind party decor, floral centerpieces, or signs for an upcoming holiday party or birthday celebration. Each foam sphere has a diameter of approximately 5.9 inches and can easily be cut to your desired size or shape.