OUNONA 10pcs 8cm Christmas Decoration Modelling Craft Solid Polystyrene Foam Balls Round Spheres 10 pieces of the foam ball solid spheres in one set will be sold together. Color: mainly white. Material: durable polystyrene foam. Each diameter: about 8cm. Can be coloured with paint to DIY create various animal and human characters. Can be used for molecular model making and various craft activities. Also great for Christmas tree ornaments and party decoration.