A helmet neck skirt system for covering an entirety of a user's neck to inhibit debris and adverse weather from providing discomfort to the user includes a collar member couplable to a full circumferential length around a base portion of a protective helmet such that the collar member extends down from the helmet generally parallel to the user's neck. Thus, the collar remains in generally spaced relationship to the user's neck and permits the insertion of an upper portion of a jacket or shirt worn by the user between the neck of the user and the lower portion of the collar. The collar extends down a distance sufficient to cover an entirety of the user's neck.