Wikipedia
Softride
Softride was a manufacturer of bicycles located in Bellingham, Washington. They specialized in bicycles for triathletes. The bicycle frames were distinctive for their lack of seat tubes and chain stays. The idea was to reduce aerodynamic drag and improve ride comfort. The company no longer manufactures bicycles, and focuses on bicycle carriers instead.
Notable Softride users include Greg Welch and Jürgen Zäck.