Designer Tim Holtz has teamed up with Advantus to offer his Idea-ology line of unique papercraft embellishments, papers, and tools with a vintage appeal. Block Upper Cling Foam Stamps by Tim Holtz idea-ology are a set of foam stamps that cling to an acrylic block for stamping. Add words or messages to your arts and craft projects with these stamps. Package contains 31 durable foam letter and punctuation stamps. Upper block case letters are 1.5 inches in height. Advantus is dedicated to providing innovative quality products at fair prices.