This clear photopolymer stamp set, Birthday Stacks, is designed by Allison Pennington and is part of the Par-Tay Time Collection from Catherine Pooler Designs. This stamp set includes layers to decorate a cake or a gift, more layers to add in the blanks, sentiments, a bow, and other embellishments. These stamps adhere to acrylic blocks and can be used with your favorite inks, markers, and embossing powders (sold separately). These stamps can be used for cards, scrapbook pages, tags, and other paper crafting projects. The following sentiments are included in this stamp set: HB2U, let's celebrate, HAPPY birthday, and time to PARTY.