We've designed this listing with our Professional Balloon Artists and more experienced DIYers in mind. No need to carry bags and bags of inventory or buy an entire bag of balloons when you just need two balloons of a color. We've taken all of the work out of the process for you by selling balloons by the cluster. Each cluster includes 12 balloons; one 17" balloons, seven 11" balloons and four 5 inch balloons. You inflate your balloons, make your quads and clusters and tie them all together...