Each tube cap is made with soft fabric and beautifully finished for a perfect fit. Stretches to fit most head sizes. Fabrics: Poly Cotton. Good quality fabric,soft and comfortable,sweat absorbent,breathable,smooth surface. Soft breathable fabric feels good on the head. Caps are easy to wear, sweating free, light weight and comfortable. Protects your hair: It's perfectly designed for women Occasions: lightweight and stretchable fabric keep you comfortable in any position. You could wear them to work and everywhere you go.They are not to hot in this weather and they keep head warm in warmer weather.It fits good so doesn't have to worry it will fall off in windy weather and blow away. Washing Instructions: Hand wash in Cold Water, hang to dry. Do not bleach.