ASTOR - Color Changing Cups | Set of 5 Reusable Cups with Lids and Straws | 24 Ounce Cold Cup | Iced Coffee Tumblers

At first when I unboxed these I felt unimpressed and thought I hadn't gotten my money's worth. Months later these are a household favorite. My younger daughter loves these for her milk. They've held up well from daily use and being washed by hand. What can I say. When cold liquid is added seeing the rainbow freckles appear is just charming. I'm certain these were not meant to be leak proof though so if that is a concern I would look for something else.

From the packaging to the bonus straws and the quality of the cups, these are perfect! I use them for my protein coffees. This company goes above just with the packaging details and the added straws (2 additional). They clearly care about their product. Try them, you’ll love them! For cold drinks only and top shelf dishwasher safe.

Exactly what I wanted. The colors change when used, more noticeable when its very hot out and you have an iced beverage in the cup otherwise the color change isn't as noticeable. Most annoying thing as with any cold beverage is the condensation on the outside.

Love these cups. I like how they change color. No issues at all

They’re super cute, they change color only with cold cold water or temperatures. Some of the lids don’t fully fit the cups but it still works!

Over all I’m really happy with the color and quality of the plastic but I’ve had these less than a month and the lines are already coming off. I have only hand washed. I’m not going to return but I don’t think I’ll buy again.

I was expecting quality and they are! They’re so cute and they look quite small but 16oz is enough for a smoothie or shake. Love the colors, I was expecting something else with the confetti but they’re cute. I will probably get a few more but other styles and sizes.

These cups are ADORABLE and durable! I've started making my iced coffee at home and I am so happy that I went with these! If you are wondering whether out not to buy these, this is your sign.. buy them!(Also, they do have lids, just didn't have it on in the pic)