Tips: Children should use them under direct adult supervision. - Package contents: 1 happy birthday banner, 12 latex balloons, 1 large cake decoration, and 12 cupcake toppers. - All balloons made of 100% high-quality latex, strong and durable, can hold helium or air. - Banners and cake toppers are made of high-quality paper. - You can stick the banners on the wall, window, etc. - Latex balloons are very easy to fill with air or helium. For best results, we suggest using helium to inflate this stylish set. - Widely used: great for my hero academia themed parties, children's birthdays, picnics, graduations, festivals, and various entertainment activities. - If you are not satisfied with our birthday decoration sets for any reason, please contact us by email, we hope to make it right.