65% polyester, 35% cotton. Sturdy, durable mixed fabrics, warm, roughened inner lining, elastic waistband with belt loops, knee pad pocket reinforced with CORDURA®, tearproof triple stitched seam, pockets, various tool pockets, 2 zipped pockets, ruler pocket, pen holders, mobile phone pocket, reflective elements (without protective function/no PPE) at the front and back, 60°C washable, suitable for tumble drying