Show everyone that you’re a huge National Lampoon’s Christmas Vacation fan by grabbing this super fun 30oz. Stainless Steel tumbler from Tervis. It features fun How National Lampoon’s Christmas Vacation graphics all over. The triple wall insulation will keep your drinks hot for eight full hours, while your cold drinks will stay nice and chilly for a day! This tumbler fits most cup holders, so traveling with it will be super easy.