A slick design with ample venting mets parabellum hes uses cuttingedge technology to ensure maximum safety with minimal weight atjust 284g medium the parabellum is the lightest in its classextended coverage at the rear of the head increases protection whilstthe fusion of two homothetic shells hes construction dissipatesshock in the event of impactthe latest safe t advanced occipital retention system allows microtuning of the fit and gel 02 padding at the front remains cool comfortable