This is the Napoli away shirt which was used in the 2013-14 Europa league campaign. I don't have many Macron shirts, think its only this and my Lorient away but I'm a big fan of their designs, very underrated kit supplier in my opinion.
This particular shirt is an "authentic" version which basically means its issued to the kit room for the players. The only difference that I'm aware of from the replica version is the tighter fit, the badges are still sewn on rather than heat pressed like the Adidas and Nike player version shirts. Another difference from this to the replica versions is the smaller sized "Lete" sponsor on the front, which is just as well as I think this detracts from the quality of the shirt, would look much better in monochrome.
The shirt was purchased from the Classic Football Shirts web site, please check out their great site here.