ABS,PP ,PE construction safety helmet cap 1.material : ABS ,PP or PE all have 2.4 point and 6 point suspension ABS,PP ,PE construction safety helmet cap 1.material : ABS ,PP or PE all have 2.4 point and 6 point suspension for choosing 4. adjustable suspension for all people 5. adjustable chin strap ABS,PP ,PE construction safety helmet cap