Package Includes: 27pcs 19 inch black white checkered square aluminum film balloons（off two for free),1 straw,1 race car happy birthday banner. High Quality: Black white checkered square balloon wall is made of durable and glossy aluminium film material,the foil material gave a luxurious, shiny look that instantly elevated the party's ambiance. the party banner is made of high quality paper card,durable to use. Easy to Assemble DIY: Simply inflate the square foil balloons using a balloon pump or straw,They have straps on all four corners for easy connection, so it easy to make a balloon wall backdrop. then arrange them into a stunning balloon wall. perfect party decorations for race car party.It would be a huge hit for your party time. Widely Applications : Indoor and outdoor use, these balloons also serve as stylish photography props for captivating photo backgrounds. Please do not inflate the balloons beyond 85% to prevent any sudden bursting.we included two extra balloons in the package as backups.100% satisfaction is our service tenet ,if you have any problem with our product,please fell free to contact us any time.We will offer you a satisfactory solution. Square Foil Balloons