A T-shirt (or t shirt, or tee) is a style of unisex fabric shirt
named after the T shape of its body and sleeves. It normally has
short sleeves and a round neckline, known as a crew neck, which
lacks a collar. T-shirts are generally made of a stretchy, light
and inexpensive fabric and are easy to clean.
Typically made of cotton textile in a stockinette or jersey knit,
it has a distinctively pliable texture compared to shirts made of
woven cloth. Most modern versions have a body made from a
continuously woven tube, produced on a circular loom, 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 or a
water jet.
The T-shirt evolved from undergarments used in the *9th century
and, in the mid**0th century, transitioned from undergarment to
general-use casual clothing.