Description:  Balloons: These balloons can be filled with air or helium, and these balloons are elastic.  DIY: You can DIY according to your own ideas, to decorate party with a variety of collocations.  Material: It is made of the aluminium film material, that is safe and practical. Decoration: You can use this Happy Birthday banner as a wall decoration, and you can hang these balloons to the wall.  Application scope: It is suitable for indoor and outdoor birthday party.  Specifications:   Product name: 13th Birthday Party Supplies Set  Color: Blue  Material: Aluminium film  Application: Suitable for birthday party decoration Size: As below: Silver Number Balloons: About 81.28cm/32 inch  Five-pointed Star Balloons: About 45.72cm/18 inch  Latex Balloons: About 30.48cm/12 inch  Blue Confett Balloons: About 30.48cm/12 inch   Package Includes:  1 Set x Banners 2 x Silver Number Balloons  4 x Five-pointed Star Balloons(2 x dark blue balloons+ 2 x light blue balloons)  20 x Latex Balloons(10 x night blue balloons+ 10 x light blue balloons)  6 x Blue Confett Balloons  Note:  1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.