This dual-threat Tumbler keeps coffee hot in the bleachers in late November and cold on a summer stroll through campus. Our fan-favorite Rambler 20 oz. Tumbler is made from durable stainless steel with double-wall vacuum insulation to protect the temp of your beverage at all costs. Like the entire Rambler Drinkware Family, the 20 oz. Tumbler and MagSlider Lid are dishwasher-safe for easy cleaning. While the magnet on the included MagSlider Lid adds an additional barrier of protection for keeping drinks contained and preventing heat or cold from escaping, please note- this magnet component is not leakproof and will not prevent spills. Product Features Digitally Printed Design Cupholder Compatible Splash Resistant Double-Wall Vacuum Insulated Dishwasher Safe