IT'S LIGHTER ON THE INSIDE; a light interior is easy to label with an ordinary pen, easier to read and prevents accidental misfiles between folders; ideal for home, school or officeBOOST SPEED and EFFICIENCY: color folders in bright red, green, yellow and blue let you spot the right file through color association and speed filing and retrieval timesLETTER-SIZE FOLDERS fit standard 8-1/2" x 11" documents; 36 assorted color folders per pack in red, green, yellow and blue; use with matching Pendaflex hanging file folders1/3-CUT TABS allow plenty of room for labeling; assorted positions allow you to cascade headers from left to right for uninterrupted viewingON THE OTHER HAND: Here's a smart tip; use two-tone folders reversed, vibrant side in, for double the color options; 4 colors become 8