This brand doesn't seem to come up a whole lot, but it's one of my favourites so I figured I would start a thread for it - I can't be the only fan.
Started by Luke Meier (formerly of Supreme) with a heavy involvement from Chris Gibbs (Union LA) in the earlier collections (maybe only the first season?), it's an Italian based label manufacturing in Italy and Japan and it seems like some of the more recent, more basic pieces are coming out of Portugal.
They do what I would describe as tailored streetwear with a heavy military reference (internal suspension systems, grosgrain reinforcements, kevlar hardware). Their prices have gone up pretty steadily but every piece I have is kind of over the top in terms of detailings.
Their footwear is made by Heschung and is equally as detailed.
Sizing wise, they tend to favor relaxed bottoms but tops seem to run slightly small ime, I'm generally an XL but take a XXL in most of their shirting and sweaters that I've tried.
Official Site: http://www.oamc.com/