30 Thomas The Tank Engine Train Edible WAFER Cupcake Topper 30 Cupcake Toppers Printed on High Quality Edible Rice Wafer Paper. Each image is 35mm (1.4inch) in diameter, perfect for small to medium cup cakes and muffins. Toppers are printed at high resolution on top quality rice paper Ideal for celebrations, parties or just great fun entertaining the kids. Can be used on shop bought or home made cakes, the paper will stick to wet icing, me lted chocolate, butter cream or jam. Edible Rice Wafer Paper ingredients: potato starch, vegetable oil, water.