A Gerry Weber elegant set size 12

An elegant dark grey set of long skirt and a jacket with a lovely material size 12 fully lined and in Excellent condition,like NEW This unique garment doesn't mention the material, but it seems like a special fabric with certain characteristics that makes it look and feel like very light and fine leather, but I think its a fabric since it says machine wash in the instructions. I guess it was uniquely made for Gerry Weber that they didn want to reveal it. Approximate measurements: Jacket: Pit 21", Waist 19 Sleeve 23, Length, front 23 back 21". Skirt: Waist 16" Length 31.5"