Pump up the volume at your next party or celebration with a colorful explosion from these stainless steel insulated cups. Each 3.9″ x 6.8″ tumbler comes with a vacuum sealed twist-on lid and attached straw for carefree sipping. And you’ll love the design! Each is a glorious combination of shades that seem to change and melt into one another in a dazzling display. They keep your drinks cold and refreshing, and look great while doing it – what more could you ask? Pick a base color, then add your school, team, organization or corporate design or message to these tumblers to create a dynamic promotion that’s just the thing to take the edge off a hot time!