I always prefer large size board. It is portable and simply perfect. I use it to explain math and science lessons to my students. This Double-sided whiteboard is perfect for them, as they can use both side of the board at the same time. Easily flip the reversible board for twice the writing area. The steel frame provides a professional appearance and rolling casters make it easy move around. Magnetic surfaces allow to display charts, papers and notes using magnets that came with the package.