10cm x 25pcs Polystyrene Balls SOLID Craft Sweet Tree Christmas Party Decoration They can be painted or can be decorated with a multitude of craft and modelling materials. They are wonderful basics for Christmas or other festive decorations. They can be used as a frame or armature for clay be it modelling clay, Paper, Papier Mache, Play Doh, Plasticine etc for 3D animations. More information in Full description.