... safety t shirt is used by policeman,soldier,fireman, etc. It is no heat,low power,no harmful rays,etc. safety t ... easy and convenient for installation, it is greatly used by policeman, soldiery, firemen and any other people who work ... safe, light, no ultraviolet rays, long lifetime.usage: used by policeman, soldier, firemen and people who work in dark. ... CTN/58X38X41CM, NW/GW:11.5/12.5KGS safety t shirt