This is probably the most versatile seat post on the market. You can use it with a Pivotal seat and allow it to slide forward and backward, you can use it with a railed seat, or you can even use it to make a frame with a built-in Pivotal post accept a railed seat. Plenty of options with this thing, and Nuno Oliveira from Odyssey explains them all.

odysseybmx.com

[bcove vid="87959423001" playerid="48195723001" /]