This tumbler boasts a unique fully leakproof Ü-Turn™ lid, perfect for cold and carbonated beverages, while the ColdKey™ metal straw ensures an eco-friendly sipping experience. Equipped with BevGuard™ technology, it keeps your drinks icy for over 24 hours, making it an ideal companion for long days. With a cup-holder friendly base, you can take your favorite 40oz refreshment anywhere, without the worry of spills.