The substance is not wool (as in the movie costumes) and very thin. Has the disadvantage that it is "only" visually what makes her, but does not represent a truly authentic costume. But the advantage is an extremely good wearing comfort because the robe is very easy. Incidentally, it looks really good.
The price - performance ratio is a little too unbalanced for me at 55 euros and I think 40 for a fair price. But compared to other I would make a recommendation for this robe after all.