Perfect the art of smart-casual dressing with this cotton-rich denim overshirt. It’s cut to a relaxed fit that’s ideal for layering. We’ve added a touch of stretch so it’s easier to move in. The process used to finish this garment has achieved a low impact score – measured using Jeanologia EIM. All M&S denim is made with responsibly sourced cotton and less water.n M&S Collection: easy-to-wear wardrobe staples that combine classic and contemporary styles.