Secure this lid on your Rambler Travel Mug and let adventure lead the way. The quick-Flip straw is 100% leakproof when closed and easy to sip from when open - making it perfect for staying hydrated while running errands or exploring new places. Plus, it can be fastened in multiple positions so righties and lefties can take a drink comfortably. Once you're back home, throw it in the dishwasher for an easy clean.Do not use the Rambler Travel Straw Mug with carbonated beverages or for storage of food or perishables.