The Pixar Fest 2024 Mystery Box Pin Complete Set is a collection of pins featuring characters from various Pixar movies such as Cars, Coco, The Incredibles, and Toy Story. The pins are part of the merchandise for the Pixar Fest 2024 convention/event and are sold as a mystery box set. The brand behind the product is Pixar, which is a subsidiary of Disney. The product falls under the collectibles and Disneyana categories, specifically pins, patches, and buttons.