The Rambler® 591 ml / 20 oz Tumbler must be able to withstand anything you throw its way. Made of tough stainless steel and equipped with double-wall vacuum insulation, it ensures the utmost protection for your hot or cold beverage. Both the tumbler and its lid are dishwasher-safe, just like the entire Rambler Family, making for effortless cleaning. While the MagSlider™ Lid's magnet offers an extra layer of protection against leaks and heat or cold loss, please note that it is not entirely leakproof. Choose from Stainless, Duracoat™ colors, and Seasonal finishes.