In supersymmetric theory, the NEUTRALINO is the lightest supersymmetric partner particle, consisting of a mixtre of the Z boson (zino), photon (photino), and the neutral Higgs (higgsino). Extremely heavy as compared to standard model particles, its mass is predicted to be 100 GeV–1 TeV. A plush Neutralino was taken aboard Discovery flight STS-128 with astronaut Christer Fuglesang in August 2009.
Approximately 2 oz (57 gm); 3 inches (6 cm) across.
For ages 5 and up as it contains glued-on/small parts.