S&M Stealth Pivotal SeatS&M wanted a seat that was comfortable pedaling while seated, while still being out of the way when standing on the pedals. The slim ergo style shape does both, while the Stealth Pivotal system eliminates the Pivotal patch, so this seat looks cleannn. Designed to be used with Long Johnson Stealth Pivotal post but can be used with any Stealth Pivotal post or traditional Pivotal post (with allen socket extension). Ergonomic Shape Plush Microfiber Cover