EN ISO 20471:2013
Certified and approved garments for protection when the user needs visually to signal his or her presence to vehicles in daylight, at night or in poor weather conditions.
High visibility clothing has a fluorescent surface and retroreflective material that meet certification requirements in three different classes. Class 3 is the highest safety class. The performance class can be obtained using a single garment or a clothing assemble, e.g. jacket and trousers. This will be stated on CE-label. A class 3 garment shall cover the torso and shall have either sleeves with retroreflective bands or full length trouser legs with retroreflective bands.