Front seat cushion pad
The driver’s seat on my Gen 3 is starting to sag. I presume it is the foam that is getting old and perhaps brittle.

Where can I get the cushion pad as indicated in yellow in the picture? I am hesitant to go to a trimmer as they may get the shape wrong which will cause discomfort on long trips.
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2005 Pajero GLS LWB DiD
Geolander AT/S, FrontRunner roofrack, OME, dual-battery
Nikon D4, 500VR