I have a 42" chest, 5'9", weigh 165 pounds, have an athletic build and like athletic/tight clothing. Small size is good for me. The quality seems pretty good. Normally washed, also the standard drying. Appears to be fairly wrinkle free. Label says do not tumble dry, 100% cotton. So not sure what's going on there. I usually just use the default setting on my dryer, hopefully this counts as "low" based on Amazon's description.