Hat material can refer to a variety of materials used to make hats, such as STRAW, FELT, velour, and palmleaf. STRAW is a light, flexible material made from dried grasses, and is commonly used to make sun hats and other lightweight headwear. FELT is a dense, non-woven fabric made from animal fur or wool fibers that have been matted together. It is often used to make fedoras and other classic hat styles. Velour is a plush, velvet-like fabric made from cotton or synthetic fibers. It is often used to make baseball caps and other casual hats. Palmleaf is a stiff, woven material made from the leaves of certain palm trees. It is commonly used to make cowboy hats and other traditional western styles.