This is a bag of 18 WUNDERballs to completely refill your REGISTER Display. It comes with 6 Medium, 6 large, and 6 X-Large. This is a mix of Solids and Swirls. The mix comes with solid green, solid orange, solid pink, solid purple and multi color. Remember, each ball is hand made, so there can be a slight variation in size within each size ball. Every ball is unique.