If the brand doesn’t have a size chart, or if you have found a polo sweat suit that doesn’t have a size chart, you will have to measure yourself to find your size. Most clothing stores sell fabric measuring tape that you can use to measure your chest, waist, and hips. You can use these measurements to find out your shirt and pant size, which you can then use to find your size in polo sweat suits. If you want to be super accurate, you can also take your measurements with a cloth measuring tape. But don’t get too caught up in these numbers – the most important thing is to buy something that fits you well without being too tight or too loose.