To release the Quick Release sout mount:

1. Release the 2 quick releases
2. Pull the red locking button forward
3. Flip the rear rack upwards
4. Move the quick release seat mount up and down

To fix the Quick Release seat mount in a position:

1. Push this red button back. If it doesn’t move back, try moving the seat mount a little bit up or down: there is about every 5 mm a position in which the quick release bike seat holder can rest.
2. Close the quick releases
3. Flip the rear rack down

There are two ranges for the seat holder as in the image below. Range A is for approximately 145 to 180 cm and the second from 170 to 200 cm. This also depends a bit on how you’d like to ride the STRIDA. You can see if you like to sit a little bit more upright, or a bit lower like an easy-rider.

The Quick release seat mount is also seperately available:

If you want to move Quick Release Seat mount to different frame pin position:

To move the quick release seat mount to the the higher or lower frame pin position for a different range. Follow the steps in the pdf below: