This double-duty, on-the-go drink handler is topped with the Rambler Stronghold Lid a leak-resistant, twist-on upgrade thats backed with dual-slider magnet technology. This lid easily rotates to fasten for both right-and left-handed users, adding a strong layer between your free-flowing drink and the outside world. And if were talkin about where to take it, its elevated handle lets you enjoy cupholder convenience just about anywhere. Please Note: The Stronghold Lid is specially made for the Rambler 20 oz. Travel Mug and wont fit other Rambler Drinkware models. The Travel Mug Stronghold Lid has four placement options and plays nice with both righties and lefties, just like all our Rambler Drinkware. Do not use the Rambler Travel Mug Stronghold Lid with carbonated beverages or for storage of food or perishables.