The Radians SV83 is a short sleeved standard Class 3 safety vest for enhanced night time visibility. Basic pockets and zip front closure for increased functionality. Class 3 safety vests are designed to protect the worker with maximum visibility. These vests are designed with the most hi-viz material coverage and reflective stripes for workers exposed to complex work environments. Class 3 vests are required in environments with high-speed traffic, high-risk environments and where the worker must be visible through a full range of motions at a minimum of 1280 feet (390 meters).