What is the fine-grained topic of the following text: The 60-second spot “Because Sneakers” features celebrity sneaker enthusiasts including rapper Meek Mill, DJ Khaled and his son Asahd, NBA stars Paul George, Ben Simmons and JR Smith, and reggaetón artists J. Balvin and Bad Bunny. Only return the topic.
Celebrity sneaker enthusiasts in a 60-second spot "Because Sneakers".