Easily identify and organize your ongoing projects with this innovative expanding file. When the poly file is open, the five separate sections slide apart for quick access and visibility. To save space, the file easily collapses, and an elastic closure keeps documents secure when you're on-the-go. Each durable section can hold up to 40 letter-size sheets.Easily identify and organize your ongoing projects with this innovative expanding file. When the poly file is open, the five separate sections slide apart for quick access and visibility. To save space, the file easily collapses, and an elastic closure keeps documents secure when you're on-the-go. Each durable section can hold up to 40 letter-size sheets.