The standard requires that Hi-Vis workwear must be designed in a unik manner. This will take into account the placement of reflecting and fluorescent material. The requirements depend on which parts of the body the garment is to cover (torso, torso and arms only, torso and legs, legs only, or garments that cover both torso, arms and legs). Reflecting and fluorescent material must be evenly used on the front and back of the garment, with a maximum
deviation of + 10%.