Written by Brave Brothers, Two Champ, and Chakun, the song has been characterized as a dance-pop track that incorporates elements of tropical house.

Four years later, the song experienced a sudden surge in popularity when a compilation video of Brave Girls performing it for the South Korean military went viral in the country in February 2021.

It soon became a nationwide hit, and achieved number one on both the Gaon Digital Chart and the K-pop Hot 100, where it remained for five and six non-consecutive weeks respectively.

[8] On March 3, the second and final teaser was released, showing the group dance for the song and scenes with members sitting on a sofa.

[12] On March 9, Brave Entertainment released a clean version of the original music video, in which scenes of the girls lying on each other had been removed.

[13] Prior to the song's release, KBS deemed "Rollin'" unfit for broadcast, stating that certain parts of the lyrics contained a slang word which was too vulgar.

On June 12, 2024, Carmen Chin included "Rollin'" in NME's list of the 15 best K-pop summer songs of all time, praising the track's "straightforward, upbeat vibe".

[19] At the time of its original release in 2017, "Rollin'" failed to enter South Korea's Gaon Digital Chart.

[23] It peaked atop said chart in its third week, for the period ending March 20, giving Brave Girls their first number-one in the country.

[36] "Rollin'" entered the Billboard K-pop Hot 100 at number 23 on the issue dated March 13, 2021, marking Brave Girls' first entry on the chart.