Product information Color:Silver Material:Aluminium Foil Quantity?A-Z 26 pcs letter balloon Size:16 inch Occasion: How to use: There are holes on the bottom and top of the easy hanging with twine,string or fishing line,ersily hung on strings from ceilings or attached to wall with tape. Reysable: Self-sealing valve with included instructions for easy inflation.When the inflation is completed,please put the ball to pinch flat,the ball comes automatically sealing glue.