Animated Flip Book Vocal Fold Voice Note Pad Memo Pad-notebook-100sheets-2pc in One Package Ten pairs of illustrative art detail the vocal fold process. Both a top and cut-away side view are included. By flipping the note pad stack, an animation effect of the vocal fold vibration process can be seen. Size: 4" wide x 5 1/4" tall. 100 pages per pad, 2 pads per package.