Lunch Box

The lunch box, also referred to as a lunch pail or lunch kit. The essential idea of a food container has been around for a very long time, but it wasn't until people began using tobacco tins to haul meals in the early 20th century, followed by the use of lithographed images on metal, that the containers became a staple of western youth, and in turn, a marketable product in the eyes of manufacturers.
The lunch box has historically most often been used by schoolchildren to carry a prepared meal to school. The most common modern form is a small case with a clasp and handle, often printed with a colorful image that can either be generic or based on children's television shows or films. Use of lithographed metal to produce lunch boxes in the 1950s, 1960s, 1970s and 1980s gave way in the 1990s to use of injection-molded plastic.
Lunch kits are comprised of the actual "box" and a matching vacuum bottle. However, pop culture has more often embraced the singular term lunch box, which is now most commonly used.