Here's a preview of what we have to look forward to --- the seat pictured here is the front passenger Recaro seat from my 460 (280GE), with very pronounced side bolsters. This is a more difficult seat to cover, due to the dramatic curvatures.
The first two photos show the partially finished upper half of the cover. This is the first example made from the prototype pattern.
The last three photos show the prototype pattern fitted to the seat.
The finished cover will use the exact fabric shown, which is a nice canvas-type material, very rugged. The stitching is all done with double stitches and a heavy duty thread, reinforced at the points that are likely to see the most stress.
You can see how nice the fit is --- the cover shown is not complete and will be designed to fit snugly, but to allow a small amount of movement as the seat is sat in and moved around in.
The pattern shown took quite some hours to build - the grey cover shown was churned out in a far shorter period of time - I'll have some more photos soon of the finished covers. Then the 463 covers for my G500 will be next.
Also, this canvas is available in a few different shades, so a person would be able to order a khaki/tan, black, or grey set of covers in the end.