Sinkin Sans
Sinkin Sans is a simple, pleasant, luxuriously proportioned and easy to read sans-serif, supplied in all 9 standard web weights, 100 to 900, plus italics, so the face is a comprehensive illustration of the CSS web font numerical scale.
Sinkin Sans is designed with tiny, inconspicuous notches that sink into verticals at the intersections of strokes, adding highlights to congested corners. The incisions make right angles appear sharper and improve definition in more intricate characters.
Sinkin Sans was created to be the web font for the K-Type site redesign, and to celebrate the launch the whole family of 18 fonts is gifted under the Apache 2.0 licence, absolutely free for Commercial and Personal use.
Also available, if space is at a premium, is Sinkin Sans Narrow, sensitively condensed for maximum legibility, and each weight is bundled with a complimentary Italic.