6 panels. Fully closed. Pre-curved visor. 8 seams on visor. Structured front panels. Mesh back panels. Suitable for head circ... 6 panels. Fully closed. Pre-curved visor. 8 seams on visor. Structured front panels. Mesh back panels. Suitable for head circumferences: S/M between 54 and 58 cm and L/XL between 57 and 61 cm.