Functional, modern and fitting HI-VIS T-shirts and polo shirts that comply with the EN ISO 20471 standard. Choose from various color combinations of HI-VIS work T-shirts and polo shirts. Reflective HI-VIS T-shirts and polo shirts from the KNOXFIELD and CIUDADES collections are suitable for work in most common operations – roads, highways, railways, warehouses, construction sites. T-shirts and polo shirts are suitable for indoor work or work in warm weather.