One color changing cup

An individual HDYO colour changing cup! That’s right, when cold enough these cups change colour. These cups come in 4 different colours including yellow (changes to green), green (changes to blue), orange (changes to red) and pink (changes to purple). Each cup costs 3.00 and that includes shipping and packaging. For more than 3 we recommend buying the set of 4 for $10 elsewhere on the HDYO store.