GoldenChild's agency, Woollim Entertainment, released their second single album “Pump It Up” B version concept photo through official SNS on September 29th at 00:00.

GoldenChild, which gave off a retro mood with the previously released A version concept photo, raised expectations for the new song concept by boasting a refreshing visual like 'original cool idol' with each individual's preppy look through the B version teaser.