T-shirt

A T-shirt (also spelled tee shirt, or tee for short) is a style of fabric shirt named after the T shape of its body and sleeves. Traditionally, it has short sleeves and a round neckline, known as a crew neck, which lacks a collar. T-shirts are generally made of stretchy, light, and inexpensive fabric and are easy to clean. The T-shirt evolved from used in the 19th century and, in the mid-20th century, transitioned from undergarments to general-use casual clothing.

T-shirts are typically made of cotton textile in a stockinette or jersey knit, which has a distinctively pliable texture compared to shirts made of woven cloth. Some modern versions have a body made from a continuously knitted tube, produced on a knitting machine, such that the torso has no side seams. The manufacture of T-shirts has become highly automated and may include cutting fabric with a laser cutting or a water jet.

T-shirts are inexpensive to produce and are often part of fast fashion, leading to outsized sales of T-shirts compared to other attire. For example, two billion T-shirts are sold worldwide each year, and the average person in Sweden buys nine T-shirts a year. Production processes vary but can be environmentally intensive and include the environmental impact caused by their materials, such as cotton, which uses large amounts of water and pesticides.

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History Simple, T-shaped top garments have been a part of human clothing since ancient times; garments similar to the T-shirt worn earlier in history are generally called .

The modern T-shirt evolved from used in the 19th century. First, the one-piece union suit underwear was cut into separate top and bottom garments, with the top long enough to tuck under the waistband of the bottoms. With and without buttons, they were adopted by miners and stevedores during the late 19th century as a convenient covering for hot environments.

In 1913, the U.S. Navy first issued them as undergarments. These were a crew-necked, short-sleeved, white cotton undershirt to be worn under a uniform. It became common for sailors and Marines in work parties, the early submarines, and tropical climates to remove their uniform jacket, thus wearing (and soiling) only the undershirt.