Package Included:40 inch rose gold 13 balloons number + 1 Straw. Premium High Quality Balloons:The 13 birthday balloons are made of quality aluminum mylar foil,thick and odorless.High quality imprint technology,edge neat,not easy to explode and leak. Rose gold number 31 balloon will be the great decoration addition for birthday parties. Sealed Automatically:The rose gold 31 balloon number supplies comes sealed automatically after inflating.13 number balloons have holes on the top to string together or to hang. Floating Mylar Balloon:If you want 40 inch 13 balloon number to float, you need to fill it with helium,please remove the pump or straw when 90% full filled,then party balloons will float prefectly. Applicable Occasions:Perfect for birthday party, anniversary,wedding,New years,graduations decorations. Rose Gold 13 Number Balloons