Shoei VFX-W Cheek Pad Set. The number on the cheek pad is the thickness in millimeters. Thinner pads can be applied to loosen the fit, thicker pads can be applied to tighten the fit. All sizes of cheek pads will fit any size helmet. FEATURES: Shoei Cheek Pad Set VFX-W Dirt Bike Helmet Accessories Fits the Shoei VFX-W Helmet Sizes are as follows: Optional = 39mm XS, S, M, L, XL = 35mm XXL = 31mm