Is there a company who manufacture complete seat OEM replacement covers - My side bolster is beginning to show some wear .
It's better to ask for forgiveness than ask for permission ......... apparently!
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2017 4.4 SDV8 Range Rover Autobiography
Ligurian Black Exterior / Ivory Interior

2016 3.0 SDV6 Range Rover Sport HSE Dynamic
Firenze Red / Black Pack / Black interior

Subaru Impreza WRX STI Spec C Type RA 2005

Mitsubishi Lancer EVO VI Tommi Makinen Edition

Not as aftermarket, but they are available to order from LR. Of course that means not cheap.

The alternative is to get a local trimmer to replace the bits which are worn, they will be able to unstitch the worn section and stitch back in a new piece. Unless the leather is wearing out a really good clean will normally bring it up nicely. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
KIA E-Niro 4+
2010 LR D4 Commercial 2.7 TDV6