100% polyester. Conforms to EN ISO 20471 Class 1. Railway use certified. 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 flap on both legs. Two Hip pockets with zip closure. One rear patch pocket with hook and loop flap. Waist guide: S- 32-34in, M- 36-38in, L- 40-42in, XL- 44-46in, 2XL- 48-50in, 3XL- 52-54in. Ref: UTBC4652