This double-duty, on-the-go drink handler is topped with the Rambler Stronghold Lid - a leak-resistant, twist-on upgrade that's 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 we're talkin' about where to take it, its elevated handle lets you enjoy cupholder convenience just about anywhere.