UNI EN ISO 20471:2017 - EUROPEAN STANDARD

High visibility garments.

The standard specifies the requirements for high visibility garments capable of visually signaling the presence of the user. Two types of materials are considered: the base material and the retroreflective material. The base material is fluorescent and can be yellow, orange or red. The retroreflective material can be sewn or heat set onto the garment. The visible areas of these two materials define the class of the garment.

X = CLASS of the garment obtained based on the table of areas

UNI EN ISO 20471: 2017 - Table of areas, visible area, m2	Base material	Retroreflective material
CLASS 3 - GARMENTS	m² 0,80	m² 0,20
CLASS 2 - GARMENTS	m² 0,50	m² 0,13
CLASS 1 - GARMENTS	m² 0,14	m² 0,10
CLASS 1 - GARMENTS (material with combined benefits) m2 0.20	N/A	N/A
NOTE. Garments CLASS is determined by the minimum area of the visible material.