The balloons are crafted of durable and strong latex; banners are made of sturdy heavy duty card stock paper and can easily be reused for multiple parties. The banners and balloons are extremely easy to assemble, it would be a happy family craft to assemble with your kids and decorate the party. , , PACKAGE INCLUDES: 1 Pc Golden Pennant banner, 1 pc Golden Happy Birthday Letter Foil Balloon, 2 Pcs Round Car Foil Balloons (18 Inch), 2 Pcs Car Shape Foil Balloons, 40 Pcs Latex Balloons (Black and Red)