Just how much polyester can be acceptable in a wool blend suit? Some fabric bolts have caught my eye that are 80/20 Wool and Polyester but I am weary about the polyester content. I know that polyester and other man made fabrics lack the breathability that a 100% wool suit has but is a small percent ok? And if so, what is the % amount that you you would not want to exceed of polyester?

Thanks, Bill