140 icons in sprite form, available in dark gray (default) and white, provided by Glyphicons.
Glyphicons Halflings are normally not available for free, but an arrangement between Bootstrap and the Glyphicons creators have made this possible at no cost to you as developers. As a thank you, we ask you to include an optional link back to Glyphicons whenever practical.
How to use
All icons require an <i> tag with a unique class, prefixed with icon-. To use, place the following code just about anywhere:
There are also styles available for inverted (white) icons, made ready with one extra class. We will specifically enforce this class on hover and active states for nav and dropdown links.
<i class="icon-search icon-white"></i>