It depends on your weight and waistline. The size of the slim version has the function of reducing the waist, so the waistline is also very important. If you weigh 120 kg. A size 38 slim fit version with a waist less than 2' 3 is similar. If it exceeds the size of 39 yards, (Reminder: the slim version is not suitable for people with stomachs, which will highlight the small belly. )