Bring the fun to your next adult birthday party with our Rainbow Cake Cups! These vibrant 9 oz. cups feature a rainbow background with colorful confetti and balloons that say “Happy Birthday”. The heavyweight paperboard construction ensures that each cup can hold hot or cold refreshments. With 8 cups per pack and 12 packs per case, you’ll have enough cups to serve 96 guests! Coordinate these Rainbow Cake Cups with the other Rainbow Cake party supplies to create a unified look. Get your discount bulk quantity today and make your next birthday party extra special!