Shop › Polystyrene ball Image 1 of 1 Polystyrene ball from £0.75 Polystyrene ball70 mm80 mm100 mmPriced Per Piece. Size: Select Size 70 mm 80 mm 100 mm 120 mm Quantity: Add To Cart Added! Polystyrene ball70 mm80 mm100 mmPriced Per Piece. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More Shop similar products: Polystyrene Ring Full 120 mm - 1 pc £1.45 Polystyrene form Cone 125 x 280 mm - 1 pc £4.95 Polystyrene Ball Separable from £6.95 Polystyrene Form Cone 70 x 120 mm - 1 pc £2.95 Polystyrene Ring Full 220 mm - 1 pc £2.85