The Rambler® 887 ml is the tumbler that gets you through the day. Your morning brew will stay hot or your iced coffee will stay cold-so take your time. Kitchen-grade stainless steel with double-wall vacuum insulation work together protect your drink at all costs. Like the entire Rambler® Drinkware Family, the 887 ml 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, this magnet slider is not leakproof and will not prevent spills.