You may see people on the street wearing tech hoodies. At this point it's the cliche uniform of the tech employee. Many companies give their employees hoodies with their logo on it upon employment.
I guess people credit Mark Zuckerberg with starting the hoodie craze, but people were wearing hoodies before zuck.
The most typical color for a tech hoodie is gray (part of the neutral/earth-tone-heavy palette popular in San Franciscans).
Taking tech hoodies to the next level (and I guess in a show of how much discretionary $ they have), GitHub gives new employees hoodies that have their GitHub username on the sleeve.
Cuz it's cold! You need layers!
The show Silicon Valley has stuff about hoodies in it.
News stories about tech hoodies
- 2010-06-07: "Mark Zuckerberg's Meltdown Hoodie – Yours For Just $2,550" Business Insider
- 2014-01-28: "Silicon Valley has a dress code? You better believe it" marketplace.org
- 2014-05-04: "HBO's 'Silicon Valley' Tech Uniform Is Unbelievably Accurate" readwrite.com
Related: The Code for America zip-up