Flannel is to Winter what linen is to Summer - a godsend. With flattering tailoring and lightly brushed Woolmark certified merino cloth, Tyrwhitt Flannel Suits are just the thing to make your Winter working life a little bit better. 100% wool, Half lined to the knee, Slim fit, Flat front, Angled pockets, Belt loops to fit 4.5 cm belt, Dry clean only - Navy stripe slim fit flannel business suit pants