100 12" latex party balloons per bag. Superior quality: ideal party decoration products, made of high quality latex, environmentally friendly. Easy to use: You can use helium, an air pump, or water to inflate the balloon. Please note that the small amount of dust on the surface of the balloon is to prevent the balloon from sticking and deforming. It is a production process for storing balloons and it is safe. You can clean the balloons before use.