High visibility shirt are quite popular among workers. The work shirt is a heavy-duty shirt used for manual or physical labor. Work shirts protect workers from different types of hazards. Wearing a work shirt protects your chest, shoulders, and arms from harsh weather conditions, chemicals, liquid splashes, dirt, grease, and fire. Typically, work shirts are fastened up the front with a button and have pockets and tool loops. Hi-visibility clothing, sometimes abbreviated as hi-viz or hi-vis, can refer to any clothing worn that is highly luminescent in its natural matt property or that is easily distinguishable against any background.