This fun Color-changing Mood Cup With Prom Design is like getting two Prom favors in one, because it changes from one color to another when you add ice-cold liquid. The 12 oz. stadium cup is made in the USA from BPA-free polypropylene and 30% post-industrial recycled material - so it's environmentally friendly, too! The stadium cup comes printed with our stock "Prom" and year design, which makes it the perfect keepsake to match any Prom theme. Hand it out at Prom, include it in After-prom party swag bags, or use it as a fun Prom giveaway with the purchase of Prom tickets.