YND MEN'S SLIM FIT 2 BUTTON 3 PIECE SUIT SET SOLID BLAZER

You can first check pic 2 to find the potential sizes according to your height and weight. And then you come to pic 3 and check the exact measurements of these potential sizes. Make sure your body's chest circumference is at least 5-8 cm smaller than the jacket's chest circumference, and your body dimensions should be smaller than the jacket's dimensions in every aspect so that you have play room inside. If you are not sure, we strongly suggest you to inquire about size first. You can tell us your height, weight, chest circumference and waist circumference and we will figure out the best size for you.