Knapsack was an emo band that was formed in 1993 by Blair Shehan (vocals/guitar) and Colby Mancasola (drums). Shehan and Mansacola were two high school friends studying at the University of California, Davis. Guitarist Jason Bokros and bassist Rod Meyer completed the lineup.
By 1994, the band had recorded a single for independent label Goldenrod Records and signed with Alias Records later that year. Their debut album Silver Sweepstakes was released in 1995. They then toured extensively playing with bands such as Pavement, Rocket from the Crypt, Jawbox and Drive Like Jehu.
Bokros left the group before the release of their second album Day Three of My New Life in 1997. He was replaced by Sergie Loobkoff of Samiam. Their third album This Conversation is Ending Starting Right Now was released in 1998. Shehan went on to form The Jealous Sound after the band broke up in 2000.