EN ISO 20471 is an international standard that imposes requirements on visible workwear for employees in high-risk areas. Today, in more and more industries, employees need to wear safety workwear with retro-reflective bands and fluorescent material to keep visibility intact. This applies to industries where a large part of the work takes place near airports, dual carriageways, traffic, cranes, and other motorized vehicles, as well as work that takes place in the dark.