Expanding file features a sliding cover that keeps the flap out of the way when accessing documents. Expanding bottom allows additional capacity as well as the ability to stand on a desktop. Use elastic closure to secure the file and protect documents on-the-go. Expanding file is made of super durable poly and includes self-adhesive blank labels.Expanding file features a sliding cover that keeps the flap out of the way when accessing documents. Expanding bottom allows additional capacity as well as the ability to stand on a desktop. Use elastic closure to secure the file and protect documents on-the-go. Expanding file is made of super durable poly and includes self-adhesive blank labels.