CasualBox mens Versatile Outdoor Head Wrap Beanie Hat Band 28% Acrylic 52% Rayon 15% Polyester (NANO Mix) 5% Polyurethane Multi Functional design, can be shaped as a headband, beanie and neck warmer Made from Nano Mix - an advanced fabric that contains negative ions Negative Ions boost your bodies immune system and skin health Made in Japan - Suitable for men and women. Approved by the Japanese Atopy Association