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.
Rubber band Thailand, and Indonesia. Once the latex has been tapped, and is exposed to the air, it begins to harden and become elastic, or rubbery. A rubber band has three basic dimensions: length, width, and thickness. (See picture.) A rubber band's length is defined as half its circumference. Its thickness is the distance from the inner surface to the outer surface, and its width is the distance from one cut edge to the other. If one imagines a rubber band during manufacture, that is, a long tube of rubber on a mandrel, before it is sliced into rubber bands, the band's