4.5 inch solid polystyrene spheres are perfect for a variety of DIY craft projects. These white styrofoam balls are made of high-quality, durable polystyrene material, which is safe, non-toxic, and has a smooth surface. The large size of 4.5 inches makes them perfect for various projects, such as flower arrangements, party decorations, school projects, and more. These foam balls are easy to work with and can be used in a variety of ways. They can be painted, decorated, glued, and embellished to suit your project needs. Whether you are an experienced crafter or a beginner, these foam balls are a great addition to your crafting supplies. They are versatile and can be used to create beautiful and unique decorations for any occasion. Order your pack today and get started on your next DIY project!