Drink in the promotional potential with these tumblers! This 12 oz. insulated tumbler features a stainless-steel exterior, copper lined interior walls and a spill-resistant slide lid with rubber gasket. The double wall vacuum insulation travel tumbler keeps drinks cold for more than 18 hours or hot for more than 8 hours. This product is BPA-free, sweat-resistant and comes in an assortment of colors. Hand washing is recommended. Add a brand name, logo or message to customize.