100% Polyester fabric with hook and loop fastening. Two 5cm width reflective tapes around the body and one over each shoulder. Hi-Vis Yellow, Orange, Yellow/Orange conform to EN ISO20471:2013 Class 2. Black, Lime, Navy, Purple, Paramedic Green, Red, Raspberry, Royal Blue Yoke on Hi Vis Yellow conform to EN ISO20471:2013 Class 1. All other colours provide enhanced visibility in all kinds of environments.