One Monsters Inc. Birthday Pennant Banner. Each banner is made of lightweight plastic and measures 46 x 18 inches, with 4 inch "tassels" on the corners of the wide end. This classic pennant-type banner will look right at home on your walls or doors. Mike and Sulley worked hard at getting their Scaring Degrees. Our Monsters Inc. Party Decorations give you the inside story on what our Boys from Monstopolis were up to during their years at Monster University. Hang your Monsters Inc. Birthday Pennant Banner on the wall behind the food table, on doors, or whereever you need a little extra decoration.