With only one day remaining until HyunA drops her new mini-album, additional album jacket photos were revealed on July 4th! The two pictures see HyunA with a more sporty image. The image concept for her upcoming title track "Bubble Pop!" combined HyunA's sassy image with a variety of sports, including baseball, rugby, and cheerleading. Cube Entertainment revealed,
"'Bubble Pop!' is a dance song that you can cheerfully enjoy in the summer. It has a strong addictive chorus with a distinctive melody and sound effects. In particular, we plan to reveal HyunA's trademark powerful dancing."