Specification :

A sweater is a knit garment intended to cover the torso and arms. It is often worn over a shirt, blouse, T-shirt, or other top, but may also be worn alone as a top. Sweaters tend to be, and in earlier times always were, made from wool; however, they can be made of cotton, synthetic fibers, or some combination thereof. Sweaters are maintained by washing, and the use of a lint roller.