5 panel design. Pre-curved peak. Stitched ventilation eyelets. Continuous or flashing LED lighting system. Replaceable lithiu... 5 panel design. Pre-curved peak. Stitched ventilation eyelets. Continuous or flashing LED lighting system. Replaceable lithium cells. Perfect for print and embroidery. Rip-Strip™ size adjuster. Head circumference: 58cm.