heart balloons: the package includes 12 pieces 18 inch heart foil balloons. These chic love balloons will creat a romantice purprise party for your lover in every precious day Romantic design: these Valentine's balloons are designed to be heart shape, the huge mylar heart balloons are noticeable enough to attract your lover's attention, which makes it a good idea for proposal Reliable material: these love balloons are made of foil material, sturdy enough, the balloon surface is of uniform thickness after inflating the balloon; And just completely release the gas from the balloon when you needn't them, fold them for next time use Method of use: can be inflatable with air or helium on your own, and the mylar balloon will automatically seal and no additional knots are required. Note: In order to avoid the balloon popping, please blow up a balloon slowly Various usage: this heart balloons decoration set fits for Valentine's Day, anniversaries, weddings, engagements, birthdays, theme parties, etc., You can make full use of them whenever you want to celebrate a holiday by planning a surprise party