Dear customer, thank you for your interest. Our product is in a regular (standard) mold, meaning it is intended to neither be too tight nor too loose. Therefore, you can generally choose the size you use in daily life, but it is not possible for us to make a definitive size recommendation. There are differences in shoulder, chest and body width between L and XL sizes; XL size will be more loose and comfortable. Since you don't want it to be too tight, we kindly ask you to review: - Product images, - Size chart, - Reviews from customers with similar weight/height. In this way, you can choose a healthier size that suits your own usage habits.