Keeps hot stuff hot…keeps cold stuff cold….and knows the difference.This stylish, affordably priced drink tumbler will let the world know that you appreciate great beef, and know the difference. We have been testing these mugs daily for the past year and our test mugs have yet to leak, chip or fade. They are manufactured overseas, but laser engraved by our good friend Blake at “Etched Intent” just down the road in Kearney, Nebraska.