L322 Vogue leather

So after fixing a wobbly arm rest and generally haveing a look over seat, noticed few marks on the grey leather, so will order a touch up kit however got me thinking, the Vogue seats are Oxford leather if I’m correct? Is it just the top of the bases and front of the back that are leather? The sides and back feel bit too soft to be leather, or if they are there much thinner than the fronts. I know alot use vinyl for sides and backs, some like Mercedes use it on seat fronts and say “leather”!