100% Polyester Coolmax® fabric sweatband. Ventilation eyelets. 6 panel design. Mesh ventilation panels. Pre-curved peak. Tear... 100% Polyester Coolmax® fabric sweatband. Ventilation eyelets. 6 panel design. Mesh ventilation panels. Pre-curved peak. Tearaway label. Head circumference: 59cm. The visor is made from recycled polythene, which is a tough, light and flexible resin. The recycled polyester used is equivalent to 7/8 bottle of 500 ml.