Meet the Ello Oasis 18oz Tumbler—the perfect companion to help stay refreshed and ready for school. With 100% leak-proof retracting straw technology, the Oasis stays spill-free and can be confidently tossed into a bag or packed in a backpack. The innovative retracting straw stays tucked away when not in use, keeping the drinking surface clean until the next sip. From cold water and fruity smoothies to iced matcha and coffee, the Oasis keeps drinks cold for up to 18 hours making it ideal for long school days, practices, and everything in between. It’s cup-holder friendly, BPA free, and top-rack dishwasher safe, so it’s a breeze to clean and easy to bring anywhere. Available in a variety of fun colors and patterns, it’s stylish for kids and practical for parents. The Ello Oasis makes hydration easy, fun, and totally mess-free.