100% polyester. These men's trousers are ideal for all-season hill walking and hiking. They offer waterproof and breathable protection from the elements with added stretch. The seam-sealed Isotex 5,000 polyester fabric features a durable water repellent finish to keep you dry inside and out. A soft, stretch liner ensures next-to-skin comfort, and the part-elasticated waist enhances mobility. Multiple zipped pockets provide secure storage for your adventure essentials. Regatta Men's sizing (waist approx): 26in/66cm, 28in/71cm, 30in/76cm, 32in/81cm, 33in/84cm, 34in/86.5cm, 36in/91.5cm, 38in/96.5cm, 40in/101.5cm, 42in/106.5cm, 44in/111.5cm, 46in/117cm, 48in/122cm, 50in/127cm. Regatta Trouser Leg length: Short- 30in, Regular- 32in, Long- 34in. UK size: 44R, FR Size: 54 FR, ES Size: 112cm REG, DE Size: W44R, IT size: 44 - 112cm R, US & CA Size: 44R. Code: UTRG2481