From Google Material repo. Just the font, not the whole other stuff.
https://github.com/google/material-design-icons
The recommended way to use the Material Icons font is by linking to the web font hosted on Google Fonts:
<link href="https://fonts.googleapis.com/icon?family=Material+Icons"
rel="stylesheet">Read more in our full usage guide: http://google.github.io/material-design-icons/#icon-font-for-the-web