el safety vest used by policeman, soldier, fireman, etc. as security indication. It ... , low power, no harmful rays, etc. EL safety vestEL safety vest has the function of security indication. At night, it can ... used by policeman, soldiery, firemen and any other people who work in dark.Packing:1pcs/polybag,50pcs/CTN/58X38X41CM,NW/GW ...