They should not have selected fabric type of seat cover !
That's seems more appropriate for cold countries where people sweat
less & tend to deposit less body etc. dirt behind on the
seats.
In the tropicalised humid climate here, i'll have preferred the M-B
tex type of seat cover, with plenty of ventilation thru the seats
as such.
Perhaps the seat maker Vogel Sitze then didn't have that much
variety of seat covers to offer ?