Dress trousers are the most formal part of the trouser range. Wool and wool-blend styles work well with dress shirts, knitwear and jackets, while cotton trousers are a lighter option for less formal business and smart-casual outfits.
Plain fronts give the simplest shape, while pleats add room through the upper leg and a more traditional detail. Fabric weight matters too: worsted wool has a smoother finish, while flannel has more texture and warmth for cooler weather.
Compare the rise, thigh and leg measurements as well as the waist. Regular and Slim Fit styles can differ noticeably in proportion even when the labeled waist size is the same.