90 Day Men is a post-rock band formed in St. Louis, Missouri, in 1995. Known for their blend of experimental rock, post-punk, and art rock, the band was active primarily during the late 1990s and early 2000s. Their sound evolved over the years, incorporating elements of progressive rock and electronic music, which set them apart from many of their contemporaries.

The band's music often features complex arrangements, angular guitar work, and a distinctive use of synthesizers, creating an atmospheric and dynamic sound. Their lyrics, often abstract and introspective, complement the experimental nature of their music.

They released several albums, including "It (Is) It (Critical Band)" and "Panda Park," which were well-received by critics and gained them a dedicated following within the indie and underground music scenes.