Kit includes hanging filing folders & interior folders for hassle-free filing. Interior folders are cut shorter than standard-size so they won't obscure hanging folders. Folders feature 1/3-cut tabs in assorted positions for quick access. Mix & match the assorted colors for different-colored interior files to avoid misfiling. Hanging file offers offer superior durability with poly laminate reinforcement strips across top edge & bottom fold. Hooks on both sides of the hanging files are designed to glide along guide rails. All folders are made of 11 point stock.