Tops are an item of apparel that refers to all garments that are worn to cover the torso. Tops may, or may not include sleeves to cover the arms.
About Wool:
Wool is a fiber made from the hair of various animals such as sheep, llamas, camels, and goats. Wool fabrics are very durable and resistant to wrinkling and well-known for their moisture-wicking properties and warmth. Wool fibers are commonly used for the manufacturing of clothing, blankets and winter wear.