WikiPedalia is not endorsed or affiliated with the Wikimedia Foundation.

Fastback

From WikiPedalia
Raleigh Professional Fastback Seat Cluster
Raleigh Professional Fastback Seat Cluster

A style of seat cluster in which the seat stays butt up directly against the back of the seat tube, rather than the sides. Sometimes supposed to provide a "stiffer", "harsher" ride. I don't believe it, but it is a light and nice-looking style.