Any tumbler that's coming along for the ride needs to be tough enough to keep up. The Rambler 591 ml (20oz) 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 591ml Tumbler and MagSlider Lid are dish washer safe for easy cleaning.
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