Arezzo stainless steel with copper vacuum lining. Locally printed by Bravefriend. Keeps your tasty drinks hot for 6 hours/cold for 12 hours. $1 refills on brewed coffee all year round, AND you don't even have to wait in line! Slap a dollar down and fill that bad boy up! They look like the Trans Am from Smokey and the Bandit, that's no accident! Only 100 in stock & once they are gone, they're gone for the year!