I will suggest you not to get this one for maruti 800. As our car's floor has multiple holes, many times water enters, also the wiring in our car passes on the floor. If you get this permanent mats you may not notice the water inside hence it may result rusting of the floor, also short circuit of the wires. It is also slippery.
Better use the woolen mat provided by the company and add rubber mats on them.