News for hackers. Stuff that matters.
Re:Official Hacker News T-Shirt by msteinert on Tuesday March 12, 2013 @05:39PM (#5365091)
It appears to be 100% cotton [1] (linked from the "Launch a Campaign page [2]).

[1]: http://amzn.to/WlmcDR [2]: http://teespring.com/design

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