Celebrate a birthday or milestone event in eye-catching style with this Foil Silver Number 4 Balloon. Featuring a shiny silver \'4\' shape, this foil balloon can be combined with other number balloons to celebrate any age of birthday or anniversary. To assemble, insert the provided straw into the self-sealing tab to inflate it with air (do not inflate with helium). Then, just string your number up using the perforated tabs, combine with other numbers if you need, and you\'re all set! Warning: This product is not a toy, for decorative purposes only.