I can't find any labels, but the material feels like wool. These trousers came from a collection of theatre costumes I bought at auction. They have been in store in a box so would benefit from airing and pressing.
No size label but the theatre has marked them as 26ins waist and 30 ins inside leg.
I have measured them when fastened and laid flat so please check the measurements against a pair of your own trousers before bidding. (No returns if they don't fit!)
Waist 13.5 ins
Seat 23 ins
Inside leg 27.5 ins (extra 1.5ins if you alter the 2 ins turn up)