Hi Vis Yellow and Orange conforms to EN ISO 20471 Class 1 & Orange is also RIS-3279-TOM Railway use certified | Black & Navy provide enhanced visibility | Made of 280 gsm Anti-pill single jersey knitted soft-feel polyester fabric | Fully elasticated waist with well-made drawcord | Two 5cm width retro reflective tapes bands higher up to the mid thigh | Cargo pocket with hook and loop on both legs | Two Hip pockets with zip closure | One rear patch pocket with velcro flap | Elasticated ankles | Comfortable to wear allowing maximum movement without restriction | The manufacturer guarantee the reflective properties according to EN standard for 25 wash cycles!