Packaging - 100 18-inch (about 46 cm) black and gold cone balloons (50 in each color) and 12 or 10 cone balloons can be assembled into a 40-inch (about 101.6 cm) explosion star balloon by simple assembly. Material - balloon is made of aluminum foil, and high-quality and durable materials make the balloon look shiny and exquisite. The aluminum foil balloon is reusable and firm, and it is not easy to pop-up. Assembly: First of all, the balloon should be inflated with a hand pump or a straw. Please be careful not to fill it with too much air to prevent explosion. Then tie 2 together and repeat until 8-12, and finally screw them together. The interesting balloon has been finished, and you can put it anywhere compatible with decoration. Applicable occasions - such as wedding, New Year's party, birthday party, graduation ceremony, pepper business demonstration, Christmas party, Halloween party, etc. Tip-balloons can float easily when filled with helium; You can also use air (but not float). This is not an integrated gas. You need to make a 12-point cone gas to compatible withm a gas. Colour:Gold & Black Material:aluminum foil Size:46cm Package Contents: 100 * balloons (50 glod and 50 black) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Applicable occasions - such as wedding, New Year's , birthday , graduation ceremony, pepper business demonstration, Christmas , Halloween , etc. Assembly: First of all, the balloon should be inflated with a hand pump or a straw. Please be careful not to fill it with too much air to prevent explosion. Then tie 2 together and repeat until 8-12, and finally screw them together. The interesting balloon has been finished, and you can put it anywhere compatible with decoration. Packaging - 100 18-inch (about 46 cm) black and gold cone balloons (50 in each color) and 12 or 10 cone balloons can be assembled into a 40-inch (about 101.6 cm) explosion star balloon by simple assembly. Tip-balloons can float easily when filled with helium; You can also use air (but not float). This is not an integrated gas. You need to make a 12-point cone gas to compatible withm a large gas. Material - balloon is made of aluminum foil, and high-quality and materials make the balloon look shiny and exquisite. The aluminum foil balloon is reusable and firm, and it is not easy to -up.