A garment which is designed to keep the wearer's torso and arms warm. Lots of people wear coats in the winter, while very few wear them in the summer. Some coats, usually called sportcoats, are lighter, more expensive, more formal and designed more to look good than to offer protection from the cold. Sportcoats are worn by people at work, at church, or at general formal occasions. Coats come in many different forms, from the lightweight windbreaker to the stylish trenchcoat to the heavy winter parka.