Abstract: An integral helmet, in particular a so-called full-face helmet, that is preferably designed with a shell construction, comprising a helmet upper-shell unit with an integrated neck unit and a chin protection unit with a jaw clamp, wherein the chin protection unit is detachably connectable to the helmet upper-shell unit so as to form the integral helmet, wherein the chin protection unit is designed for connection to the neck unit as an open chin bar unit with end areas that are separated from one another at a distance so that, in the assembled state, the end areas form a completely closed unit together with the neck unit. Also, a method for connecting and/or disconnecting, without the use of tools, a chin protection unit having a jaw clamp to, or from, a helmet upper-shell unit having an integrated neck unit, so as to form an integral helmet, in particular an integral helmet.