Sizzix Dimensional Domes are a product line of clear plastic domes designed for use in crafting and DIY projects. The domes come in various sizes and shapes, and are used to create 3D effects on a range of projects, such as cardmaking, scrapbooking, and home decor. They are easy to use and can be filled with a variety of materials, such as glitter, beads, or small embellishments, to create unique and eye-catching designs. Sizzix Dimensional Domes are a popular choice among crafters and artists for adding depth and dimension to their projects, and for their ability to showcase small details in a fun and creative way.