This Laser-engraved Travel Tumbler/Cooler is two functional favors in one, so it's double the value (but not double the price) for your school. The 10 oz. double-wall insulated stainless steel mug comes with both a flip-top lid and a cooler rim. Insert the flip-top lid to use the mug as a tumbler that will keep a beverage hot for up to 6 ours. Switch out the lid for the cooler rim to keep a beverage cool for up to 12 hours. Your school name, event name, Prom theme, or message will be laser-engraved on the front to give the mug an elite look. Each tumbler comes individually boxed for easy presentation.