The YETI Rambler® 20 oz Tumbler with MagSlider™ Lid has the toughness and features that will make it your favorite drinkware ever. The Rambler® is made from durable stainless steel with double-wall vacuum insulation to protect your hot or cold beverage at all costs. It has the perfect size as it Fits in most cup holders and this tumbler as well as its lid are dishwasher-safe for easy cleaning. Speaking of its lid, the magnet on the included MagSlider™ Lid adds an additional barrier of protection for keeping drinks contained and preventing heat or cold from escaping. Enjoy your drinks, at the temperature they are meant to be enjoyed, with the YETI Rambler® 20 oz Tumbler with MagSlider™ Lid!