Seat foam

I need to replace the foam on the upright of my front seats, mainly the drivers. As the foam has split on the bolster and you can feel the frame.



Looking on rimmers there are different ones (class's as they put it), anyone any idea what the differences are between these? I was on aware of 2, 25 and ZR.



http://ift.tt/1gO1s4m (item 11)



Now Im not really looking at spending £65 plus per seat, so knowing the difference may hepl to find replacements

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