The Herringbone turn up front pleat smart trousers are made from warm wool flannel. They feature a zip and button fastening, back and side pockets. Cosy for cooler weather. Portuguese flannel making is a tradition that is widely considered an art form, something that Portuguese Flannel have harnessed in its purest form. Following the tradition of the craft, Portuguese Flannel creates timeless statement clothing every season, designed for functional and practical wear.