You are looking for Polystyrene balls with a diameter of 4 cm? VBS leads a multiplicity at Polystyrene balls and offers you among other things 4 cm-Polystyrene balls.
Styrofoam balls are a genuine Bastelbasic-Article and are suitable for a multiplicity of Craft techniques. Whether for Easter nests, Christmas Balls with Sequins or other ideas - the Polystyrene ball is very versatile