Hi-vis yellow conforms to EN ISO20471:2013 Class 1 & EN343 against foul weather;Black and Navy provide enhanced visibility (non-EN471 standard) 100% waterproof Polyester with Oxford PU coating Two 5cm wide reflective bands around lower legs Elasticated waistband Snap buttons on the bottom for adjustment Trousers also available in Orange, code HVS462-3M Matching jacket, code HVP300