A Best Basic T shirts, or tee, 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. Tshirts are generally made of a stretchy, light, and inexpensive fabric. The best basic t shirts evolved from undergarments used in the 19th century. In the mid-20th century, transitioned from undergarment to general-use casual clothing.

They are typically made of cotton textile in a stockinette or jersey knit. It 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 circular knitting machine, such that the torso has no side seams.