Hello, officially the seats on the Hyundai H1 Travel are not to be dismantled on the rails. This is often criticized at the H1. I find these are very easy to dismantle, you only need a Torx T50. Six screws loosen and lift out seats. The single seat is even to be extended on its own. Unfortunately, a rather unsightly “hole” is created in the vehicle floor which is to be covered. That’s why I designed seat rail covers which are quite easy to assemble. e original screws (M10x1) should however be used for this, since there are no such screws at reasonable prices in the trade. (no standard) The seat rail covers are designed in such a way that they can be mounted with the original screws. Advantage: You only need one tool! I have taken into account that it is possible with or without floor mats. See pictures. I like to publish a technical drawing for the H1 drivers who want these “recasts”. I can also imagine ALU-Riffelblech from the hardware store. I hope I can alleviate this shortcoming at the H1-Travel. Again to the conclusion contrary to many test reports: Yes, it is probably possible to expand all seats without much effort!