A t-shirt (t shirt or tee) is a style of shirt. a t-shirt's defining characteristic is the t shape made with the body and sleeves. it is normally associated with short sleeves, a round neck line, and no collar. however, it may also include long sleeves, buttons, collars, or v-necks. t-shirts are typically made of cotton fibers (sometimes others), knitted together in a jersey stitch that gives a t-shirt its distinctive soft texture.