The Hoberman Flight Ring is a pocket-sized disk similar to other flying discs / rings, but with a unique twist. The Flight Ring is just 5" wide. Just pull on opposite sides and the disc expands into a ring. Before each throw, press down the center and throw it like any other flying disc / ring with the print side down. When you're done you can easily shrink it back down by pushing the outer edges together. It comes in two designs: Multicolor and Glow-in-the-Dark. Small Diameter = 5 inches, Large Diameter = 9 1/2 inches. For ages 6 and up.