Made in 100% cool wool.  Extremely luxurious and light weight.  

Brand: De Bonne Facture

The back of waist band has elastic so the waist can be stretched

Size 48 (fits more like 31):  Waist: 31"(relaxed) 34"(stretched), bottom opening: 16", inseam: 32"

Size 52 (34):  Waist: 33"(relaxed) 36"(stretched), bottom opening: 162", inseam: 32"

Size 52 (36):  Waist: 35"(relaxed) 38"(stretched), bottom opening: 17 1/2", inseam: 32"

Made by Atelier Hervier Productions, France.