Mix, match and stack your favorite shapes to create one-of-a-kind, three dimensional button art. Use a strong adhesive dot to hold one button to the next. These buttons are a fun addition to sewing projects, greeting cards, scrapbook layouts and other paper crafting projects. One of the stacker buttons comes pre-made to show the end result. Each package includes nine buttons (three of each size) ranging from 35mm to 12mm.