Hi Chris
Woven fabric on a velvet loom.
This is (usualy) a top end cut pile carpet of dense fibres giving a luxurious velvet look and some say feel.
The fibre content will almost certainly be 80/20 and is usualy a solid colour.On your inspection look out for shading/pooling and make sure the customer is aware of this before cleaning.
As I say a luxury item not seen so much these days but no problem to clean using HWE or DF, Tex etc ,use only Woolsafe approved products

You may notice some colour in the waste tank or on pads but don't be alarmed as this is normal.
Trevor