Interesting....I don't know what they're called

Softride Rahmen Rapparee - eBay Rahmen, Fahrradteile, Radsport, Sport. (end time 22-Sep-10 00:42:21 AEST)

ugly thats what

This is what it could look like if you hipster it out.
ALLSOP softride powercurve single speed on velospace, the place for bikes

I want that SO BAD