Stretch Armstrong keeps best at room temperature. Stretch Armstrong is made of latex rubber filled with gelled corn syrup, which allows it to retain shape for a short time before shrinking to its original shape. An estimated 67 different versions from Japan, Germany, Italy, France, Australia, and other countries released Stretch Armstrong variations between 1976 and the 1990s. The last two were filled with a granular solid in place of the viscous liquid found in the other figures. A vacuum pump, which attached to the heads of these figures, removed the air from within, which "froze" the toy in its stretched position.
Kenner Products other major approach was for the toy companies to invent their own original characters and then help produce comic books and cartoons that promoted those exact designs (e.g., Hasbro's G.I. Joe and Transformers and Mattel's "Masters of the Universe"). In a departure from this, Kenner did not have any arrangement to incorporate their new concepts and designs into "The Real Ghostbusters" cartoons or comic books. This looser approach to the source material of licensed toy lines continued with Kenner's Dark Knight Collection, launched in 1990 and the first of their numerous lines based on the Batman character. This initial set