Starbucks UV-Reactive Tumblers - Change Color in the Sun

Starbucks UV-Reactive Tumblers - Change Color in the Sun Introducing Starbucks’ first ever UV-activated color changing cold cups! Rather than pouring hot or chilled liquid to make your tumblers change shades, Starbuck’s latest color changing creation is a little more unique than that. Venti sized tumblers that change color when you walk outside, simply step out into Mother Nature on a sunny day to watch the magic happen. Take a stroll in the park or walk the dog with the UV-reactive tumbler that are perfect for sipping in the summer. Expect this set of tumblers to show colors of lime green, dark blue, light blue, purple, and pink! No matter what type of temperature controlled liquid is poured inside the cup, this drinkware will turn as long as your outside! 5 pack Brand New with Tags Brand New in Box Unopened Unused Starbucks Toppers are available in a separate listing.