A sweatshirt is a long-sleeved pullover shirt or jacket fashioned out of thick, usually cotton, cloth material.
[4] They created a thick cotton practice jersey that was a modification of a ladies' union suit top.
The sweatshirt's potential as a portable advertising tool was discovered in the 1960s when U.S. universities began printing their names on them to exhibit school pride.
The sweatshirt, along with the T-shirt, provided a cheap and effective way of disseminating information on a mass scale.
Due to the relative simplicity of customization and the power of clever graphics combined with catchphrases, sweatshirts became a vehicle for personal expression for both the designer and the wearer.