Unusual "alternative" t-shirts - who might have these online or in NYC?

[calf]

Last Saturday I passed by a guy wearing an athletic fitting t-shirt made of a coarsely weaved, but soft-looking black fabric. The most noticeable aspect was in the collar and sleeves: their edges were not hemmed, but instead ended in a very thin, tight curl.

I like how the style offers a minimalist, casual yet timeless look. Where do you find such a shirt and others like it? The vast majority of stores only sell your conventional t-shirt, and I have no idea where to look.

 

[calf]

So... does no one have an answer, or am I asking the wrong crowd or something? :/