Reusable Plastic Cold Drink Cups - 5 pastel and 5 frosted colored tumblers with lids and straws Sip your refreshing summer drink in this beautiful color changing cup. Just add ice and watch the colors change before your eyes. You will find it change colors ally when you add your favorite cold beverage or ice under temperature below 59℉（15℃) : then sky becomes cobalt, rose becomes corak red, citron becomes emerald, pink becomes purple, and arctic cups become a FUN raspberry . With a personalized touch, that’s pretty cool for you! WITH OUR COLOR CHANGING CUPS -- You and your children can experience drinking your favorite ice-cold drinks in another FUN way too TRAVEL FRIENDLY -- These cups are able to be stacked together perfectly that allows making them easy to stow when not in use. Perfect for stacking in cupboards bags or luggage. MORE DETAILS : ✓Both the lid and the cup use food grade PP,please rest assured to use ✓The straw has a fixed ring design, which won't slip out easily. ✓The concave and convex design at the bottom of the cup makes the placement more stable ✓Water poured into 15 degrees will automatically change color, when the temperature is low, it will also change color automatically, and poured into warm water will change back to the original color COLOR CHANGING CUPS, POUR COLD WATER TO SEE THE COLOR TRANSFORM BEFORE YOUR EYES -- Add ice to your favorite beverage, the color changing tumblers start changing color immediately! Breaking these out for a summer party and watching your friends’ eyes light up! 5 PCS DURABLE & REUSABLE CUPS，VERSATILE ENOUGH for EVERY DAY USE - Featured with color changing and good-looking, our reusable color changing cups are suitable for cold drinks such as coffee, tea,lemonade, water, juice, smoothies, milkshakes ... This travel mug will definitely catch everyone' eyes and is aesthetically pleasing for tropical vacation photos, poolside glamour shots, and family barbecues or travel outdoor. Just enjoy your colorful holiday and upcoming summer with it! REUSABLE MUG with A CLEAR,BLANK BODY, AVAILABLE in A FULLY CUSTOMIZABLE OPTION -- These reusable plastic cold tumblers come with matte clear blank finish, the body of the cup can add names or funny symbols on your own for gifts. The best cup gifts will make big fun for you children and friends HIGH QUALITY MATERIAL,SPLASH PROOF& EASY TO CLEAN:Both the lid and the cups use high quality food-grade material and splash-proof design, and virtually eliminates the need for disposable plastic water bottles. Add a pop of color to any at-home desk or workspace and stay hydrated throughout the day. SERVICE & PERFECT : 30 Days refund , for any product problem, please don't hesitate to contact us. we would be happy to issue you a full refund or send you a replacement