Abstract: A binder arrangement comprising a pair of covers hingably carried by a spine and containing at least one binder carried by one of the covers and an expandable compartment carried by the other one of the covers further comprising a case that encompasses the binder arrangement that includes flexible sidewalls that each comprise a skirt that extends along the side edges of each cover with one of the skirts releasably attached to the other one of the skirts by a fastening arrangement that is elastically anchored to the spine by a stretchable gather and a second fastening arrangement for providing access to the expandable compartment.