BaliYo offers a new concept in pens. It provides safe unlimited creative motion anytime, anywhere, even while sitting. 100% U.S.A. Made using high-performance materials and manufacturing. With the included instructional DVD, you will learn six basic tricks. The BaliYo is 4 1/4 inches (108mm) tall, and weighs in at 1oz (29g). Contains the Fisher Space Pen cartridge. Writes underwater, in freezing cold, boiling heat, at any angle, even upside down.