These are color changing tumblers. Fill the cups with ice-cold water and watch how the marble change colors. EVEN THE STRAW IS COLOR CHANGE TOO! Use your favorite vinyl cutter and permanent adhesive vinyl to create a personalized design for any ocasion
Product Details-
-Size: 24 fluid ounces
-Material: BPA free Plastic - FDA approved
-Color Lid : Red
-Clear Straw: Blue Color changing
-Includes: 5 Marked/Lined/Selection Box tumbler, 5 Straws and 5 Lids
-For cold beverages ONLY- DO NOT microwave- Top rack dishwasher safe
*NOT DOUBLE WALLED*