Method and apparatus for bicycle seat adjustment

In a bicycle seat assembly a fastener driver is rotatable in first and second directions. Upon rotating the driver in the first direction, it threadably engages a shaft of an adjusting member causing tightening of a connection between a bicycle seat, a seat post and the adjusting member and producing simultaneous adjustment of a wedge sub-assembly provided at an interface between a distal end of the adjusting member and the seat post. Rotation of the fastener driver in the second direction causes at least partial disengagement of the threadable connection between the driver and the adjusting member, resulted in loosening connection between the seat post and the adjusting member.