With our premium double-walled vacuum insulated design made with food grade safe and BPA free 18/8 stainless steel, your drink will stay hot or cold for hours and won’t transfer a metal taste into your drink. HAND-WASH ONLY! Not dishwasher or microwave safe! This tumbler 20oz is ideal for any beverages, like champagne, juices, cocktails, wine, coffee, beer, whiskey and more. Suitable for traveling, hiking, boating, fishing, camping, BBQ and daily use. Anyone Or For Yourself! Great for any occasion - wonderful gifts for friends, family and Coworkers! Our 20 oz tumblers come with a spill-proof slide-top lid, as well as, a reusable straw. This gives you everything you need for a busy on-the-go lifestyle Care instructions: Machine Wash Absolutely love your order or contact us and we'll make it right. Your satisfaction is 100% guaranteed.