X-zylo™ is the incredible flying gyroscope that has been thrown the length of two football fields! It's flight is simply unbelievable--the ultimate game of catch! X-zylo unofficially broke the world flying disc distance record when it was thrown 655 feet. NASA scientists, renowned aerospace engineers and academic institutions have met with the makers of the X-zylo, the William Mark Corporation, and studied X-zylo's fascinating flight technology, yet no consensus has been reached on how X-zylo actually flies.
Further information available
here