I always worry about buying these online and its the first time I've purchased a Wyn jersey so wasn't 100% sure on the fit...but after wearing it for my 60k ride over the weekend definitely reassured me of its quality and comfort! It honestly felt like I was wearing nothing...nothing dug in anywhere or was uncomfortable at all and the fit was perfect (im a tall slim woman with big shoulders and a Medium is perfect). Thanks guys for making such a great product!