The Radians® SV63 two tone surveyor class 3 vest is a short sleeved hi-viz safety vest perfect to be worn in day time conditions. Contrast trim combinations make workers much more noticeable in low light and broad day light. Very functional pocket configuration so you can carry the tools you need to do your job. 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 ft (390 m).