Kaleidograph Contrast features black/white printed designs on the same die-cut cards as our Kaleidograph Crystal set. Makes more than 500 billion patterns. Combine Contrast with one of our existing sets (Crystal, Flora, OpArt) to create a nearly infinite number of unique patterns, or try to match designs on the enclosed poster. Made in the USA from sturdy, non-toxic paperboard, these sets are sized similar to a thick CD case (4.75" x 4.75" x .375"). The sleeve provides storage and frame for display, and the enclosed poster provides hundreds of designs to inspire or challenge you to match. For ages 5+.