This 11 piece Thinlets die set, Envelope, Folder and Flowers is designed by Eileen Hull for Sizzix. This die set features an envelope and a folder, two flowers with leaves and centers, and three hearts. These dies are compatible with leading die cutting machines (sold separately). These dies can be used for cards, scrapbook pages, tags, and other paper crafting projects. The approximate assembled sizes range from 2.875" x 1.875 x 0.25" to 2.5" x 1.25" x 0.25".