Biforms letter and single x-height. It allows you to mix and match uppercase and lowercase in the same text line.
Aspirin Advance is the redesign of 1997 original version. We decided to redraw the whole set and bring it up to date. The new version features minor and major change in some characters. Plus new improvements in mixed-case kerning.
Original version of this font also has been used on promotion material of the rock group Matchbox20.