This package contains 14 foil balloons in letter shape and 1 in Diamond shape. The balloons will come flat and inflating will be needed. They can be glued, taped or hung however you like them to be placed. To inflate the balloons, simply insert a straw into the plastic valve at the bottom of the letter and slowly blow into it. When the balloon is sufficiently inflated, pull out the straw and pinch the self sealing plastic valve. The balloons will stay inflated for days. NOTE: These balloons are not meant to be filled with helium as they will not float. WARNING: Due to the balloon is NOT made of normal latex material. The overpowering air pressure from the machine might damage or burst the balloon. Be careful.