Quantity: 1 Accent your rainbow or organic decor themed party with this 20 ball shaped 4D Spheres - Purple Magenta foil mylar balloon. The perfect balloon for your rainbow or organic decor party this 20 La Balloons party balloon is great for setting the scene! This balloon includes a self-sealing valve preventing the gas from escaping after it s inflated. The balloon can be inflated with helium to float or with a balloon air inflator. Balloon arrives uninflated.