Clothes are articles worn on the body. Generally, clothing is made of fabrics or textiles, but over time, it has included clothing made of animal skin and other thin materials, as well as natural products found in the environment. Clothing is mostly limited to human beings, which is the characteristic of all human societies. The number and type of clothes worn depend on gender, body type, social factors and geographical factors. Clothes cover the body, shoes cover the feet, gloves cover the hands, and hats and headdresses cover the head. Glasses and jewelry are not generally considered clothing, but they play an important role in fashion and clothing.