Shoei Type-Q Centre Pad (M9)Centre pads in varying thicknesses let you replace the original lining or fine tune fit around the upper head. Sizes such as M5, M9, and M13 indicate thicknessM5 thinner, M13 thicker. A snug, comfortable fit is essential for safety and stability. The centre pad helps achieve this, while its 3D rib structure improves airflow and moisture management. If your helmet interior is worn or no longer hygienic, replacing the pad restores fit and freshness.