12 oz or 17 oz, these fun items promote your brand. These cups change color when a cold beverage is added. Available in colored or frosted and 2 sizes. 12 oz colors: blue to purple, yellow to green, frost to blue, or pink to purple. 17 oz has the above colors and frost to red, frost to pink, frost to purple, frost to orange, orange to tropical red or yellow to green. Item B71112 or B71117.