12" Metallic Purple Latex Balloon Pack. Metallic purple latex balloon in value pack of 15pcs at promotional prices. Helium quality grade latex balloons. Sold in uninflated without helium. Balloon size (after inflation) is about 12 inches. Latex balloons are essential item for any parties! We have a variety of balloon colors to choose from. Select matching solid color latex balloons for your theme party in 2 or 3 colors. Simply mix and match these latex balloons with your party themed foil balloons to create the perfect party look.