ISA seat post

The saddle is clamped to the ISA seat post by means of
the patented excentrical inserted parts. By turning these
180°, the saddle can be moved by another 20 millimeters
forwards or backwards. So far, this could only be reached
by exchanging a straight post for an offset or vice versa.
The seat post will be available in the most often used
diameters and can be installed on almost every bike
with corresponding seat tube dimensions.