These M&S Men's Formal Trousers are expertly crafted with a blend of Polyester, Viscose and Elastane, ensuring both comfort and stretch. Featuring a zip closure and flat front, these trousers have a classic straight leg style and are available in size 40 waist and extra-long 35-inch inside leg. The trousers are machine washable and come in a stylish navy blue colour, making them perfect for any formal occasion.