Safety protection] helmet, multi-layer protection, anti falling, impact resistance, shock resistance, etc.For better comfort in helmet riding,The introduction of airflow through the top vent can relieve the sultry air generated inside the helmet.Thereby,the heat generated inside the helmet is discharged from the rear vent.Quick design of uncovering switch, press and hold the switch to turn over to the top of the head,Quick design of uncovering switch, press and hold the switch to turn over to the top of the head