Exclusive By Malene Birger satin trousers. 
Average price of trousers from this brand is 200 euros.
Size: 36 (in my opinion more 38)
Fabric: 55% cotton, 40% polyester and 5% elastane
Condition: very good
Measures:
waist width 40 cm
hips width 50 cm
lenght 101 cm