6 panels. Ventilation eyelets. Child safe secure button. Rip-Strip™ size adjuster. Tearaway label. Head circumference: 58cm. ... 6 panels. Ventilation eyelets. Child safe secure button. Rip-Strip™ size adjuster. Tearaway label. Head circumference: 58cm. The visor is made from recycled polythene, which is a tough, light and flexible resin.