24 oz. Color-Changing Reusable BPA-Free Plastic Tumblers with Lids & Straws - 6 Ct.

Change things up with these clever drinking cups! These tumblers have lids and straws and change color when cold liquid or ice is added to the cups. It’s like carrying around a cup of science as you watch the tumblers react to the temperature change! Fill these with small candies (sold separately on this website) and hand these out as small gifts or party favors. Color change is activated when cup is filled with ice-cold beverage. Plastic. (6 pcs. per unit) 3 3/4" x 6 3/4" 24 oz. Hand wash only. Not recommended for microwave use.