AEROBIE. The best throw in the world! PRO RING. Spectacular rings to throw - in the Guinness book of records for the farthest throw at 383 metres! Diametre 33 cm. Central strip in polycarbonate, flexible rubber catching sides. From 12 years old. PRO RING throwing ring part of a complete range of disks and rings to throw, boomerangs, rockets, all designed with the same concern for efficiency and attractiveness (made in the U.S.A).