Aerobie flying ring (Ø33cm), the world record holder with a Guinness World Record entry for a 406m flight over Niagara Falls; tremendous flight distances, precise flight, and a high-quality, technical design have made Aerobie rings so popular. Thanks to their low mass, "Aerobie" flying rings remain particularly stable in the air. Their inventor, Alan Adler, incorporated findings from his research and teaching at Stanford University, Princeton University, and NASA into their development. The focus was on precision, stability, and aerodynamics. Thrown with even minimal effort, "Aerobie" rings fly over great distances due to minimal air resistance and land with pinpoint accuracy. Rounded, soft edges make them easy to catch. The Aerobie product range includes frisbees and flying rings in various sizes with diverse features. Please note: This item comes in assorted colors; color selection is not possible and is subject to availability.