People complain about them being too big,  we ordered an XL and they fit like they always have. They're supposed to be kinda long so they can be tucked in and it leaves room for if they shrink up a little after washing. After buying these for almost ten yrs for my kids dad, there's never been any difference in anything other than how the tag is printed on the back of the neck. If you don't wanna tuck them on then order a size down.