Flame retardant work pants with four-way stretch fabric for added comfort and perfect freedom of movement for a variety of positions while working. Modacrylic fabric is flame retardant, resistant to fire and self-extinguishing, reducing the wearer’s injury in the face of flames or flash fires.High visibility trousers certified to EN 20471, suitable for road construction or public services, and other occupations where high visibility is required on a daily basis. Modern reflective strips increase your safety in low visibility conditions. Ergonomic pant legs with durable adjustable knee pockets for added comfort when kneeling. Black fabric at the knees improves stain resistance.