Polly Pocket

The term "Polly Pocket" (also spelled Polly Pocket) is also used to refer to document wallets. The high heat resistance allows the pipe to tolerate a longer period of use.
. Specialty tobacco pipes, though commonly used for smoking marijuana, are made from Pyrex. There are also some boy dolls (Rick, Steven, etc.). Due to its high heat resistance, it can tolerate the great temperature differences between water and the Nichrome heating element. They gave a new spin on fashion dolls; instead of traditional cloth clothing, Polly Pockets used unique "Polly Stretch" garments, rubbery plastic clothes that could be put on the dolls and removed. Aquarium heaters are sometimes made out of pyrex.

That same year, Mattel also introduced Fashion Polly!, which used the same characters from the new Polly Pocket (Polly, Lea, Shanni, Lila, etc.), but they came in the form of 3 ¾ inch (9.5 cm) plastic jointed dolls. Claims have been made of severe personal injury during these events. The new Polly doll is slightly larger and has a more life-like appearance than the original dolls. Recent reports suggest that, notwithstanding the claims made for Pyrex, the glassware can shatter violently and unexpectedly, even when used in accordance with manufacturers instructions. In 1999, Mattel redesigned Polly and created a new series of collectible items. Pyrex measuring cups, which featured painted-on markings illustrating graduated measurements, are also widely used in American kitchens. In 1998, while production lulled, Bluebird Toys endured several hostile take-over attempts until Mattel finally purchased them later that year. Glass cookware is another common usage; a Pyrex pie plate is almost the American standard pie dish.

Mattel held a distribution arrangement with Bluebird Toys for Polly Pocket items in the early-1990s. Pyrex's refractory properties and physical strength make it ideal for use in laboratories, where it is used to make high-durability glass lab equipment, such as beakers and test tubes. Bluebird Toys of Swindon, England licensed the concept and the first Polly Pocket appeared in stores in 1989. Caltech's famous 200-inch telescope mirror at Mount Palomar was cast by Corning during 1934-36 out of Pyrex, which expands and contracts less than ordinary glass. Using a powder compact, he fashioned a small house for the tiny doll. Another useful characteristic of Pyrex is that when broken, it tends to crack into large pieces rather than shattering (it will snap rather than splinter). Polly was first designed by Chris Wiggs in 1983 for his daughter Kate. Pyrex is also less dense than ordinary glass.

The current Fashion Polly dolls sold by Mattel differ from those originally sold by Bluebird Toys. The boron gives borosilicate glass a reduced thermal expansion coefficient (about one-third that of ordinary glass), making it more resistant to heat. The name comes from the fact that many of the original Polly Pocket toys came in pocket size cases. Borrowing from the welding trade, new burners combining oxygen with natural gas were required. Polly Pocket is a line of small plastic dolls and accessories aimed at girls. Since Pyrex melts at a higher temperature than ordinary silicate glass, some new techniques were required to bring Pyrex into industrial production. Pyrex is created by adding boron to the traditional glassmaker's "frit" of silicate sand, soda, and ground lime.

. Though borosilicates had been produced before, the name Pyrex is widely used as a synonym for the material. Pyrex is a brand name of borosilicate glass introduced by Corning Glass Works in 1924.