A SIZE ADJUSTABLE SUSPENSION FOR PROTECTIVE HELMETS, FORMED OF A HORIZONTAL OUTER BAND ARRANGED WITHIN THE HELMET SHELL AND FIXEDLY SECURED THERETO AT THE FRONT, REAR AND TWO SPACED SIZE POINTS TO FORM A ROUGLY HEXAGONAL SHAPE. AN ADJUSTABLE IN LENGTH INNER BAND SECURED TO THE OUTER BAND BETWEEN ITS POINTS OF SECUREMENT TO THE SHELL, WITH THE SIDE AND REAR SECURING MEANS BEING IN THE FORM OF LOOPS THROUGH WHICH THE BAND EXTENDS. THE LOWER ENDS OF OVERHEAD LOOPED SUSPENSION STRAPS ARE CONNECTED TO THE LOOPS SO THAT THE INNER BAND MAY BE ADJUSTED FOR WEARER HEAD SIZES.