Estone Light Thin Breathable Reflective Vests Environmental Sanitation Coat Safety Vest (Green) These reflective safety vests are easy to wear, comfortable provide high visibility for others around, also for workers along the highways or on the work site These vests meet or exceed highest ANSI 107-2004 class 2 standard requirement For place: Night riding, repair, construction, operation, construction, engineering construction Is mainly plays the role of warning.