I'm generally wary of buying Peal Izumi items online. I presume they are tailored on the small side. But I took a chance when this came up on Chainlove as I loved the looks and the price was right. I normally wear an XL T-shirt and the XL Launch jersey fits me perfectly. A touch on the loose fitting side rather than the expected snug fit. Very comfortable and I love the asymmetrical design. If they come out with this in some additional colors (this would look great in red!), I'll buy some more.
The only minor negative is that this jersey omits the middle of the 3 rear pockets. The other two are not larger. Rather, there is just an empty space where the middle pocket would normally be. Only a problem if you tend to stuff your jersey pockets full.