TREND enterprises, Inc. School Skills Wipe-Off Book Wipe-Off Book, 28 pgs Wipe-off surface encourages repetition to build hand-eye coordination crucial for skill mastery Great for use in classrooms, childcare centers, home, and travel. Perfect for quiet time activities 28-page book, 8 1/2" x 11". use trend wipe-off crayons or wipe-off markers for best results