This is a mug shaped like Wilson the Volleyball, a prominent set piece in the film Castaway (2000), starring Tom Hanks.

In the film, Chuck, a FedEx worker, is stranded on a desert island after a plane crash. While attempting to start a fire, Chuck cuts his hand. He furiously throws several objects from the salvaged FedEx packages washed ashore after the crash, including a Wilson Sporting Goods volleyball, and leaves a blood-stained handprint on the ball. After calming down, Chuck draws a face into the smeared blood, names the ball Wilson, and begins talking to it. He continues to talk to it regularly during the rest of his time on the island.

Bai made a very limited run of 10 of these mugs.