Originally Posted by
jrickards
The other thing to be careful with is sizing: there is Medium for racers and Medium for the rest of us (substitute Medium for whatever generic size you wear). Race fit is smaller than regular fit: measure a jersey or t-shirt that you feel comfortable in (flat on its back, armpit-to-armpit) and then use that as a measure for your searches.
Just out of curiosity, I had a look at eBay. I normally wear a Medium and the only shirt I had with me (that I wasn't wearing and didn't need to strip to measure) was a loose fitting button shirt that was 22in, armpit-to-armpit (44in). Here is a listing of a few jerseys on eBay: 46" XL, 44" XL, 42" XL, 42" L and 40" XL (all men's jerseys, there was a 38" XL but it was a Ladies size). There also are references to sizes 4 and 5 for men, which is likely a European sizing, we don't see it here in Canada, nor have I heard of it for US shirts as well.