To tell us about the hottest promotional products for summer, we’ve enlisted the help of US Imprints Director of Corporate & Executive Sales, Beth Beasley. As you would expect, keeping cool is the name of the game. What’s cooler than cool? Ice cold. What’s cooler than ice cold? Ice cold for 8-12 hours, and that’s exactly what you’ll get out of this years hottest item: the copper vacuum insulated tumblers.