"Summer Rider" is Da Pump's 26th single on the avex tune label. It is the group's first single in three years and their first as a nine-member unit. It was released on July 15, 2009, in two formats, CD and CD+DVD. The single will contain three original songs including the title track, a dancable summer tune, and their instrumentals. It will be used as the commercial song for Youfuku no Aoyama's Seiryou Suits campaign starting on May 25.