100% LEAK-PROOF: The innovative retracting straw technology ensures this tumbler can be tossed into a backpack or daycare bag spill-free. HIDE A STRAW TECHNOLOGY: The soft, silicone straw tucks away with a quick twist of the lid dial, keeping drinks clean, and little adventurers ready for anything. DISHWASHER SAFE: BPA free and top-rack dishwasher safe for hassle-free cleanup after snack time, lunchtime, or any time in between. KEEPS COLD FOR HOURS: Keep drinks cold for up to 14 hours, so your little one's favorite beverages are the perfect temperature all day long. TRAVEL FRIENDLY: Perfectly sized for smaller hands, the 14oz kids tumbler fits easily in lunchboxes, cubbies, car seats, and stroller cup holders.