BNWT from a smoke free home. These M&S Autograph Boys Navy Smart/Lightweight Trousers in size 11 years are perfect for formal occasions such as weddings. Made from a comfortable polyester blend fabric, these trousers feature an active waist for a better fit. The smart style and blue colour make them a stylish choice for any young boy looking to make a smart impression. Easy to care for with machine washable instructions, these trousers from Marks & Spencer are a versatile addition to any boy's wardrobe.