Flannel is a soft woven fabric, typically made of cotton or a blend of cotton and synthetic fibers. It is known for its warmth and comfort, making it a popular choice for clothing like shirts, pajamas, and pajamas. Flannel has a slightly napped texture, giving it a cozy feel against the skin, and is often brushed to enhance this feel. The fabric is available in various patterns and colors, commonly featuring plaid or check designs. Its breathability allows for comfortable wear in both warm and cool weather.