Make sure your Prom favors are the kind that will dazzle your students, like this Prom 2018 Light-up Mason Jar. The 16 oz. acrylic tumbler is shaped like a mason jar and includes a black lid, black straw, and black base. An LED light in the base makes it light up! A "Prom 2018" imprint in black is printed on one side to complete the look.