Widely Application: This set perfect for football theme party, baby shower party decoration, frist one birthday party,sport themed party,perfect for super bowl sunday,college football association party, child Birthday Party Decoration and other similar theme parties. Premium Material:This set Birthday Party foil balloon was made of premium foil with uniform color thick and hard wearing, High quality material. Not-easy burst and safe to use. Easy to use：you can just use a straw or pump to blow up the balloons,pinch the balloon mouth flat after inflation, they will seal automatically. Mylar balloons can be reused.fill with pure helium if you want them to float，But Please DO NOT overfill the balloons.