One 3 count Monsters, Inc. Coordinating Party Lei Set. Each set includes three 18 inch poly leis: one green, one blue, and one purple. Our professional Party Planners have put together this Monsters, Inc. Coordinating Party Lei Set to coordinate perfectly with our Monsters, Inc. Party Supplies. Kids and adults of all ages like to wear these fun, festive plastic leis. Use a few Monsters, Inc. Coordinating Lei Sets to decorate tables and chairs, and to hang around the party area for fun pops of color. Be sure to have a lei for each party guest to wear during the party and to take home as a silly souvenir.