12" Metallic Latex Balloon Assorted Colors. Metallic latex balloon in value pack of 50pcs at promotional prices. Helium quality grade latex balloons. Sold in uninflated without helium. Balloon size (after inflation) is about 12 inches. Assorted colors latex balloons are suitable for any party. Simply mix and match these latex balloons with your party themed foil balloons to create the perfect party look.