Spooky season and the NFL season collide perfectly in the graphics for this Buffalo Bills Halloween 24oz. Tumbler & 15oz. Bistro Mug Set. The skeleton and graveyard imagery is just what you need for a fab-boo-lous holiday. The fun doesn't have to end when Halloween passes, though, thanks to the the high-quality Buffalo Bills graphics that make this a fun, "spirited" set for use year round.