1.ABS safety helmet 2.Material:ABS for shell ,6 prong ,knitted chin strap with a PE tray 3.Adjust manner: plug 1. anti-shock & puncture HDPE/ABS shell for overall head protection 2. 6-point webbing suspension harness 3. adjustable strip ratchet headband to fit everyone’s requirements 4. replaceable sweatband & elastic chin strap for wearing comfort 5. accessory slots available for extra function ...