Mark Zuckerberg, heartland  tourist and Facebook's CEO, is famous for wearing the same thing every day .

If you've seen a photo Zuckerberg from the past few years, you've most likely seen him wearing a grey shirt, blue hoodie, jeans, and Nikes . 

He has a closet full of grey t-shirts: 
Zuckerberg doesn't just wear any old plain grey Hanes t-shirt, though. His are special ordered from Brunello Cucinelli, and reportedly cost between $300 and $400. A few years ago, H&M rolled out a joke "Zuckerberg collection," but that's not on sale anymore.  

Klaus Buchroithner , CEO of Vresh Clothing, decided to study Zuckerberg's shirt closely, and make a replica of it, or as "as close to the original as possible" without being the same exact item - kind of like how Instagram rolls out new features.

Buchroithner looked at the fabric, the color, and even the length of the t-shirt while crafting the replica . 

Now the "Zuckerberg Shirt" is on sale for 40 euros, or about $46 . They're made in Italy and all profits go to the Chan Zuckerberg Initiative , a philanthropic company funded by the Facebook fortune that sometimes invests in startups. 

Here are the "specs" for the " Zuckerberg Shirt :" 

Fabric 100% mercerized combed cotton, Made in Italy (extra soft) 
Weight 180g per m² (20% more than industry standard) 
Color zucker-grey tones, melange (sale e pepe) 
Stitching double-stitched with PEGASUS EX3215-03 Serger

And here's Buchroithner wearing his 40-Euro shirt: