Styrofoam ball that is 5 diameter; the perfect base for a multitude of arts and crafts creations. This white Styrofoam ball is made from a very lightweight foam material. Styrofoam ball is great for molecular model building, craft projects and other creations. Styrofoam is a very lightweight and porous material that can easily be painted, shaped, sculpted or cut. You can use the Styrofoam ball for kids crafts, holiday decor or party decorations.