In mold polycarbonate shell in molding is the process of bonding the helmets micro shell to its eps foam layer to provide a sturdier more solid helmet the eps foam is shot into the thin micro shell cap when its in the mold thus the name rather than formed separately and taped on later ergodial fit system this system brings one handed adjustments to their universal fit helmets a simple press of a button and slide of the dial brings snug and comfy stability bell crash replacement scheme