BirthdayExpress Monster Jam Party Supplies - Round Activity Placemats (4) Includes (4) paper activity placemats. Each paper placemat measures approximately 11" x 14" in size. Add matching tableware, favors, accessories, or a party kit bundle to complete your Monster Jam birthday party. Features favorite monster trucks including Grave Digger, Max-D, El Toro Loco, Monster Mutt, and Mohawk Warrior.