Give leaks a run for their money with the Rambler® Stronghold™ Lid. Designed for our 30oz. Travel Mug, the lid twists on securely and uses dual-slider magnet technology to help keep leaks and splashes contained. To sip, simply push the magnet down and slide. When you're done, slide it forward. And when it's time for a cleaning, just pull the magnets apart and let the dishwasher do the work. Do not use the Rambler® Stronghold™ Lid with carbonated beverages or for storage of food or perishables. Learn more about product use and safety on our FAQ page. For detailed cleaning instructions, learn more here on our Rambler® Cleaning instructions page.