Tabbed pocket file expands a full 12" at top and bottom. Constructed of textured polypropyleneï¿½20 times stronger than paper based material. Elastic cord closure. Includes 12 color-coded and alpha index tabs for quick and simple organization. Expandable File Folder Type: Elastic Cord Closure; Indexed File; Size: Letter; Width: 13 1/4 in; Height: 9 11/16 in.