6 panels. Curved visor. Closed back. Stitched eyelets. 8-row stitching on visor. Suitable for head circumferences: S/M betwee... 6 panels. Curved visor. Closed back. Stitched eyelets. 8-row stitching on visor. Suitable for head circumferences: S/M between 54 and 58 cm and L/XL between 57 and 61 cm.