Shoei Hornet X2 Cheekpads. 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 Hornet-X2. FEATURES: The Cheek Pad Set for the Hornet-X2 Sizes are as follows: XS = 39mm S, M, L, XL = 35mm XXL = 31mm OPT = 43mm